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Definition of Oligo- (prefix)
Medically reviewed by Min Clinic Staff | Updated: January 2026
Oligo- (prefix): Means just a few or scanty. From the Greek "oligos', few, scanty. Examples of terms starting with oligo- include oligodactyly (few fingers), oligohydramnios (too little amniotic fluid) and oligospermia (too few sperm).