focal length

1. 1.

   the distance from a lens to its focus

   Synonymsfocal distance

   Broaderdistance

Questions about focal length

What does focal length mean?

focal length means "the distance from a lens to its focus".

What is another word for focal length?

Close synonyms include focal distance. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is focal length a common word?

focal length is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.