focal : Dictionary / Wörterbuch (BEOLINGUS, TU Chemnitz)

English Dictionary: focal	by the DICT Development Group
3 results for focal
From WordNet (r) 3.0 (2006) [wn]:
focal adj having or localized centrally at a focus; "focal point"; "focal infection" of or relating to a focus; "focal length"
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Focal \Fo"cal\, a. [Cf. F. focal. See {Focus}.] Belonging to,or concerning, a focus; as, a focal point. {Focal distance, or length, of a lens or mirror} (Opt.), the distance of the focus from the surface of the lens or mirror, or more exactly, in the case of a lens, from its optical center. {Focal distance of a telescope}, the distance of the image of an object from the object glass.
From The Free On-line Dictionary of Computing (15Feb98) [foldoc]:
FOCAL 1. FOrmula CALculator. An interactive system written by Rick Merrill of {DEC} in 1969 for {PDP-5} and {PDP-8}. It was a descendant of {AID}/{JOSS}. Versions: FOCAL-69, FOCAL-1971, FOCAL-11 (for {PDP-11} under {RT-11}). (1994-12-21) 2. Forty-One CAlculator Language. The programming language of the HP-41 calculator line. (1994-12-21)