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Definition of F (symbol)
Medically reviewed by Dr. Otari Nergadze, Neurosurgeon | Updated: January 2026
F (symbol): A much used symbol, F stands for fractional concentration; free energy; Fahrenheit; visual field; fluorine; force; filial generation, followed by subscript numerals indicating specified matings such as F1); the amino acid phenylalanine; the coefficient of inbreeding , etc.