Focal

a.

1.

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.

Adj.	1.	focal - having or localized centrally at a focus; "focal point"; "focal infection"
	2.	focal - of or relating to a focus; "focal length"

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).

approaching, arch, asymptotic, banner, basic, bedrock, capital, cardinal, central, centralized, centred, centripetal, centrolineal, champion, chief, concentrated, concurrent, confluent, confocal, connivent, convergent, converging, crowning, dominant, essential, first, foremost, fundamental, great, headmost, hegemonic, indispensable, leading, life-and-death, life-or-death, magisterial, main, master, material, meeting, mutually approaching, of vital importance, overruling, paramount, predominant, preeminent, preponderant, prevailing, primal, primary, prime, principal, radial, radiating, ranking, ruling, sovereign, star, stellar, substantive, supereminent, tangent, tangential, topflight, uniting, vital

Index: # 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

About this site and copyright information - Online Dictionary Home