Dictionary: A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z


noun, Optics, Photography.
(photog) another name for f-number


Read Also:

  • Focal reaction

    focal reaction n. A limited reaction that occurs at the point of entrance of an infecting organism or of an injection. Also called local reaction.

  • Focal segmental glomerulosclerosis

    focal segmental glomerulosclerosis n. Segmental collapse of glomerular capillaries with thickened basement membranes and increased mesangial matrix, seen sometimes in nephrotic syndrome or mesangial proliferative glomerulonephritis.

  • Focal-seizure

    noun, Pathology. 1. an epileptic manifestation arising from a localized anomaly in the brain, as a small tumor or scar, and usually involving a single motor or sensory mechanism but occasionally spreading to other areas and causing convulsions and loss of consciousness.

  • Foch

    [fosh; French fawsh] /fɒʃ; French fɔʃ/ noun 1. Ferdinand [fer-dee-nahn] /fɛr diˈnɑ̃/ (Show IPA), 1851–1929, French marshal. /French fɔʃ/ noun 1. Ferdinand (fɛrdinɑ̃). 1851–1929, marshal of France; commander in chief of Allied armies on the Western front in World War I (1918)

Disclaimer: Focal-ratio definition / meaning should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. All content on this website is for informational purposes only.