English ⇄ Chinese Danish Dutch English Finnish French German Greek Italian Russian Serbian Latin Spanish

English thesaurus
F1
abbr., anim.husb.	first filial descendant
abbr., auto.	Formula One
abbr., biotechn.	first filial generation
abbr., polit.	North Africa
genet.	first generation (dimock)
F-1
abbr., med.	Flory factor-1
F₁
abbr.	first filial generation
F 1
abbr., med.	first generation, the offspring of the parental generation

F1: 2 phrases in 1 subject

Optics branch of physics

2