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MedTerms Medical Dictionary A-Z List - B: Detailed Datasheet
Medically reviewed by Min Clinic Staff | Updated: January 2026
Ba-BbBc-BeBf-BjBk-BlBm-BoBp-BrBs-BvBw-Bz
BBa-Bb
- B cell
- B variant GM2-gangliosidosis
- B virus
- B(a)P
- B-type natriuretic peptide
- B. burgdorferi
- B. cepacia
- B. coli
- B. quintana
- b.i.d. (on prescription)
- Ba
- Babesiosis
- Babinski reflex
- Babinski response
- Babinski sign
- Baby blues
- Baby teeth
- Baby walker
- Baby, fetal alcohol syndrome
- Babysitter's elbow
- Bacillary angiomatosis
- Bacille Calmette Guerin
- Bacillophobia
- Bacillus
- Bacillus anthracis
- Back pain
- Back pain, low
- Backbone
- Background radiation
- Bacteremia
- Bacteria
- Bacterial
- Bacterial artificial chromosome
- Bacterial peritonitis
- Bacterial prostatitis, acute
- Bacterial prostatitis, chronic
- Bacterial vaginosis
- Bacteriaphobia
- Bacteriocidal
- Bacteriology
- Bacteriophage
- Bacteriostatic
- Bacterium
- BAEP (brainstem auditory evoked potentials)
- Bag, air
- Baker cyst
- Baker's yeast
- Balamuthia mandrillaris
- Balance
- Balance, acid-base
- Balance, sense of
- Balanitis
- Balanitis, circinate
- Balanoposthitis
- Balantidiasis
- Balantidium
- Baldness
- Baldness, patchy
- Ball-and-socket joint
- Balloon angioplasty
- Balloon tamponade
- Bambino
- Ban zhi lian
- Band, chromosome
- Band, Q
- Banding of chromosomes
- Bannayan syndrome
- Bar chart
- Bar graph
- Barbara McClintock
- Barbat skullcap
- Barber itch
- Barber Say Syndrome
- Bardet-Biedl Syndrome
- Bariatric
- Bariatric physician
- Bariatric surgery
- Bariatrician
- Bariatrics
- Barium
- Barium enema
- Barium enema x-ray
- Barium solution
- Barium swallow
- Barker, Horace Albert
- Barlow syndrome
- Baroparesis
- Barosinusitis
- Barotitis
- Barotrauma
- Barotrauma, otic
- Barotrauma, sinus
- Barr body
- Barrett esophagus
- Barrett's esophagus
- Bartholin's glands
- Bartonella quintana
- Bartsocas-Papas Syndrome
- Bartter syndrome
- Basal cell carcinoma
- Basal cell nevus syndrome
- Basal cells
- Basal ganglia
- Basal metabolic rate
- Basal nuclei
- Basal temperature
- Basal thermometer
- BASE breast cancer gene
- Base excision repair
- Base in DNA
- Base of tongue
- Base pair
- Base sequence
- Base sequence analysis
- Base, pressor
- Base-excision repair
- Baseline
- Basement membrane
- Basic Local Alignment Search Tool
- Basilar
- Basilar fracture
- Baskerville effect
- Basophil
- Basophilic leukocyte
- Bather's eruption
- Bathophobia
- Batten disease
- Battered child syndrome
- Battle fatigue
- Bayes theorem
- Baylisascaris
BBc-Be
- BCC
- BCG
- BCM
- BCNS
- BDD
- Beaded vitreous type Stickler syndrome
- Beals
- Beals, Rodney K.
- Beard
- Beard ringworm
- Beat, premature
- Beau lines
- Beau's lines
- Beau-Reil cross furrows
- Beaufort wind scale
- Becker muscular dystrophy
- Beckwith-Wiedemann syndrome
- Bed blocker
- Bed bug
- Bed bugs
- Bed sore
- Bednet
- Bedsore
- Bedwetting
- Bee genome
- Bee sting
- Bee sting, Africanized
- Beef tapeworm
- Beers criteria
- Beers list
- Beetle, blister
- Behavior center, moral
- Behavior therapy
- Behavior, automatic
- Behavioral medicine
- Behcet's disease
- Behcet's syndrome
- Beijerinck
- Beijerinck, Martinus W.
- Bekam
- Belching
- Bell
- Bell's palsy
- Bell, Charles
- Bell, Sir Charles
- Belladonna
- Bellini duct carcinoma
- Belly
- Belly button
- Belly pain
- Belt, seat
- Benign
- Benign intracranial hypertension
- Benign lymphoreticulosis
- Benign melanoma
- Benign paroxysmal positional vertigo (BPPV)
- Benign prostatic hyperplasia
- Benign prostatic hypertrophy
- Benign recurrent aseptic meningitis
- Benign sleep myoclonus
- Benjamin Spock
- Benzene
- Benzidine
- Benzo(a)pyrene
- Benzodiazepines
- BER
- Berardinelli-Seip syndrome
- Bereavement
- Bergamot oil
- Bergstrom
- Bergstrom, Sune K
- Beriberi
- Beriberi, infantile
- Berlin Heart
- Bernard syndrome
- Bernard, Christiaan
- Bernard-Horner syndrome
- Bernard-Soulier syndrome
- Bernstein test
- Berry aneurysm
- Berserk
- Berylliosis
- Beryllium
- Berzelius
- Berzelius, Jons Jacob
- Best's Disease
- Beta adrenergic blocking agents
- Beta agonist
- Beta blocker
- Beta carotene
- Beta cell
- Beta cell, pancreatic
- Beta error
- Beta particle
- Beta protein 1
- Beta-2 agonist
- Beta-agonist
- Beta-defensin
- Beta-secretase
- Betel nut
- Beverly Hills diet
- Bezoar
BBf-Bj
- BF
- Bi-
- BIA
- Biallelic
- Bias
- Bicarbonate
- Biceps
- Bicornuate
- Bicuspid
- Bicuspid aortic valve
- Bicuspid valve
- Bicycle helmet
- Biermer's anemia
- Bietti crystalline dystrophy
- Bifid
- Bifid uvula
- Big bone disease
- Big toe sign
- BIID
- Bilateral
- Bilateral pneumonia
- Bile
- Bile acid
- Bile acid resin
- Bile duct cancer
- Bile sludge
- Bilharzia
- Bilharziasis
- Biliary
- Biliary atresia
- Biliary compression
- Biliary decompression
- Biliary sand
- Biliary sludge
- Bilious
- Biliousness
- Bilirubin
- Biloma
- Binaural
- Binge drinking
- Binge eating disorder
- Binocular
- Binocular diplopia
- Binocular vision
- Binocularity
- Binswanger disease
- Binucleate
- Bio-
- Bioactive
- Bioarchaeology
- Biochemical
- Biochemical aspirin resistance
- Biochemistry
- Bioelectric impedance analysis
- Biofeedback
- Biofilm
- Biofluid
- Bioidentical hormone therapy
- Bioinformatics
- Biologic evolution
- Biological chemistry
- Biological response modifiers
- Biological safety level 1
- Biological safety level 2
- Biological safety level 3
- Biological safety level 4
- Biological therapy
- Biology, molecular
- Biomagnetic therapy
- Biomarker
- Biopsy
- Biopsy, bone marrow
- Biopsy, brain
- Biopsy, breast
- Biopsy, endometrial
- Biopsy, excisional
- Biopsy, incisional
- Biopsy, liver
- Biopsy, muscle
- Biopsy, punch
- Biopsy, sentinel-lymph-node
- Biopsy, skin
- Biopsy, stereotactic needle
- Biosafety
- Biosafety level
- Biotechnology
- Bioterrorism
- Biotherapy
- Biotin
- Bipolar disease
- Bipolar disorder
- Bipolar I disorder
- Bipolar II disorder
- Bird flu
- Birt Hogg Dube syndrome
- Birt-Hogg-Dube syndrome
- Birth assistant
- Birth cohort
- Birth companion
- Birth control
- Birth control, emergency
- Birth defect
- Birth defects, study of
- Birth rate
- Birthmark
- bis in die (on prescription)
- Bisexual
- Bisphosphonate
- Biventricular assist device
BBk-Bl
- BKA
- Black American
- Black Death
- Black eye
- Black henna
- Black lung disease
- Black plague
- Blackhead
- Blackwell, Elizabeth
- Bladder
- Bladder cancer
- Bladder cancer risks
- Bladder catheter, indwelling
- Bladder infection
- Bladder inflammation
- Bladder outlet obstruction (BOO)
- Bladder pain
- Bladder, overactive
- Blade bone
- Blalock-Taussig operation
- BLAST
- Blast phase
- Blastocyst
- Blastocystis hominis
- Blastocystis infection
- Blastocystosis
- Blastokinin
- Blastoma
- Blastomyces dermatitidis
- Blastomycosis
- Blasts
- Bleb
- Blender experiment
- Blepharitis
- Blepharophimosis
- Blepharoplasty
- Blepharoptosis
- Blepharospasm
- Blighted ovum
- Blind
- Blind spot
- Blinded study
- Blindness
- Blindness, legal
- Blindness, night
- Blister
- Blister agent
- Blister beetle
- Blister, blood
- Blister, fever
- Blister, water
- Blistering agent
- Block, caudal
- Blocker, beta adrenergic
- Blockers, beta
- Blood
- Blood bank
- Blood blister
- Blood cleaner
- Blood clot
- Blood clots
- Blood clots, estrogen-associated
- Blood count
- Blood culture
- Blood draw
- Blood dyscrasia
- Blood glucose
- Blood group
- Blood group, ABO
- Blood in semen
- Blood in the eye
- Blood in the urine
- Blood Institute, National Heart, Lung, and
- Blood pH
- Blood poisoning
- Blood pressure
- Blood pressure, high
- Blood pressure, low
- Blood sugar
- Blood sugar, high
- Blood sugar, low
- Blood transfusion
- Blood urea nitrogen
- Blood, urinary
- Blood-brain barrier
- Blood-thinner
- Bloody nose
- Bloody show
- Bloody sputum
- Blot, Northern
- Blot, Southern
- Blot, Western
- Blue baby
- Blue baby operation
- Blue cohosh
- Blue sclera
- Blueberry root
- Blunted affect
- Blurred vision
- Blush
BBm-Bo
- BM
- BMI
- BMI calculation
- BMJ
- BMP
- BMP2
- BMPR1A
- BMRs (biological response modifiers)
- BMT
- BNP
- Board certified
- Board eligible
- BOD POD
- Body cell mass
- Body dysmorphic disorder
- Body fat monitor
- Body fat scales
- Body habitus
- Body hearing aid
- Body image obsession
- Body integrity identity disorder
- Body mass index
- Body odor
- Body packer
- Body packing
- Body stuffing
- Body surface area
- Body type
- Body, amygdaloid
- Body, ciliary
- Bodywork
- Boerhaave's syndrome
- Bogorad's syndrome
- Boil
- Bone
- Bone cancer
- Bone cyst, aneurysmal
- Bone cyst, simple
- Bone density
- Bone marrow
- Bone marrow aspiration
- Bone marrow biopsy
- Bone marrow transplant
- Bone marrow transplantation
- Bone mass density (BMD)
- Bone mineral density
- Bone morphogenetic protein
- Bone morphogenic protein 2
- Bone scan
- Bone type
- Bone, ankle
- Bone, blade
- Bone, breast
- Bone, calf
- Bone, carpal
- Bone, coccygeal
- Bone, collar
- Bone, cranial
- Bone, cuboid
- Bone, endochondral
- Bone, ethmoid
- Bone, frontal
- Bone, giant cell tumor of
- Bone, heel
- Bone, occipital
- Bone, parietal
- Bone, sesamoid
- Bone, shin
- Bone, sphenoid
- Bone, temporal
- Bone, thigh
- Bone, wing
- Bone, zygomatic
- Bones of the arm, wrist and hand
- Bones of the head
- Bones of the leg, ankle and foot
- Bones of the skeleton
- Bones of the trunk
- Bones, axial
- Bony syndactyly
- Bony tarsus
- Boomeritis
- Booster shot
- Borage
- Borborygmi
- Borborygmus
- Borderline personality disorder
- Bornholm disease
- Borrelia
- Borrelia burgdorferi
- Borrelia myamotoi
- Bos taurus genome
- Bosma arhinia microphthalmia syndrome
- Botox
- Bottlefeeding
- Botulinum toxin
- Botulism
- Bougie
- Bougienage
- Boutonneuse
- Bovine
- Bovine genome
- Bovine tuberculosis
- Bow-legs
- Bowel
- Bowel Cancer
- Bowel disease, inflammatory
- Bowel disorders and fiber
- Bowel sounds
- Bowen disease
BBp-Br
- BP
- BP1
- BPD
- BPH
- BPPV (benign paroxysmal positional vertigo)
- Brace, foot-drop
- Brace, Milwaukee
- Brachial artery
- Brachial neuritis
- Brachial palsy
- Brachial paralysis
- Brachial plexus
- Brachial plexus palsy
- Brachial plexus paralysis
- Brachial vein
- Brachmann-de Lange syndrome
- Brachy-
- Brachycephaly
- Brachydactyly
- Brachytherapy
- Brachytherapy, coronary artery
- Bradycardia
- Bradykinesia
- Bradykinetic
- Bradyphrenia
- Bradypnea
- Braille system
- Brain
- Brain aneurysm
- Brain anthrax
- Brain biopsy
- Brain cancer
- Brain edema
- Brain freeze
- Brain Hemorrhage
- Brain lesions
- Brain malleability
- Brain plasticity
- Brain stem
- Brain swelling
- Brain tumor
- Brain ventricle
- Brain, fornix of the
- Brain, water on the
- Brainerd diarrhea
- Brainstem
- Brainstem auditory evoked potentials
- Brainstem implant
- Branched-chain ketoaciduria
- Branchial cleft cyst
- Branchial cyst
- BRAT Diet
- Braxton Hicks contractions
- Brazelton newborn test
- BRCA breast cancer gene
- BRCA1
- BRCA1 breast cancer susceptibility gene
- BRCA2
- Breadbasket
- Breakbone fever
- Breast
- Breast abscess
- Breast absence
- Breast aplasia
- Breast augmentation
- Breast biopsy
- Breast bone
- Breast cancer
- Breast cancer gene
- Breast cancer gene BRCA1
- Breast cancer gene BRCA2
- Breast cancer metastasis suppressor 1 (BRMS1)
- Breast cancer susceptibility genes
- Breast cancer, familial
- Breast cancer, male
- Breast development, early
- Breast discharge
- Breast feeding
- Breast fibroadenoma
- Breast implants
- Breast infection
- Breast lump
- Breast milk
- Breast pain
- Breast reduction
- Breast surgeon
- Breast trauma
- Breast, amastia
- Breast, infiltrating ductal carcinoma of the
- Breast, infiltrating lobular carcinoma of the
- Breast, Paget disease of
- Breastfeeding
- Breastfeeding practices
- Breathing
- Breech
- Breech birth
- Breslow thickness
- Bridge
- Bright's disease
- Brill-Zinsser disease
- Brissaud's infantilism
- British National Formulary
- Brittle bone disease
- Brittle diabetes
- Broca's area
- Broken foot
- Broken hip
- Bromine
- Bromism
- Bromobenzylcyanide
- Bromoderma
- Bronchi
- Bronchiectasis
- Bronchiole
- Bronchiolitis
- Bronchitis
- Bronchitis, chronic
- Bronchopulmonary
- Bronchopulmonary dysplasia
- Bronchopulmonary segments
- Bronchoscope
- Bronchoscopy
- Bronchospasm, exercise-induced
- Bronchus
- Brontophobia
- Brooke-Spiegler Syndrome
- Bross
- Bross, Irwin DJ
- Brown fat
- Brown syndrome
- Brown, Louise
- Brown, Michael Stuart
- Bruce N. Ames
- Bruce protocol
- Brucellosis
- Brugada syndrome
- Bruise
- Bruit
- Brunhilde virus
- Brushfield's spots
- Bruton agammaglobulinemia tyrosine kinase
- Bruxism
BBs-Bv
- BSA
- BSL
- BSL-1
- BSL-2
- BSL-3
- BSL-4
- Bubble boy disease
- Bubo
- Buboes
- Bubonic plague
- Buccal mucosa
- Buerger's disease
- Buffalo chest
- Buffalo hump
- Bug, kissing
- Bug, reduviid
- Bulbar
- Bulbar conjunctiva
- Bulbourethral gland
- Bulimia
- Bulimia nervosa
- Bulimia susceptibility gene
- Bulla
- Bullae
- Bullous
- Bullous pemphigoid
- Bullying
- Bumps
- BUN
- Bundling
- Bunion
- Buprenorphine
- Burkholderia cepacia
- Burkitt lymphoma
- Burkitt's lymphoma
- Burn
- Burn treatment
- Burn, first degree
- Burn, second degree
- Burn, third degree
- Burning mouth syndrome
- Burning urination
- Burp
- Bursa
- Bursae
- Bursal
- Bursitis
- Bursitis, aseptic
- Bursitis, calcific
- Bursitis, elbow
- Bursitis, hip
- Bursitis, knee
- Bursitis, septic
- Bursitis, shoulder
- Bursopathy
- Buruli ulcer
- Burundanga (Hyoscine Hydrobromide)
- Buschke disease
- Buschke scleredema
- Buschke's disease
- Buschke's scleredema
- Butterbur
- Butterfly rash
- Butterfly-Shaped Macular Dystrophy
- Butyric acid
BBw-Bz