Pronunciation: ˌ h ī -p ə r- ' f ō -k ə l-
Function: noun
Etymology: International Scientific Vocabulary
Date: 1905
: the nearest distance upon which a photographic lens may be focused to produce satisfactory definition at infinity
Pronunciation: ˌ h ī -p ə r- ' f ō -k ə l-
Function: noun
Etymology: International Scientific Vocabulary
Date: 1905
: the nearest distance upon which a photographic lens may be focused to produce satisfactory definition at infinity
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012