alphabet

F Number

Pronunciation of F Number
/ˈɛf nˈʌmbə/, /ˈɛf nˈʌmbə/, /ˈɛ_f n_ˈʌ_m_b_ə/

Synonyms for f number:

speed, stop number, focal ratio.

speed, stop number, focal ratio.

yesteryear

past tense, past times, history, past, yesterday, antecedent, history, past, yesterday, yore.