Word Meanings - FOCAL - Book Publishers vocabulary database

Belonging to,or concerning, a focus; as, a focal point. Focal distance, or length,of a lens or mirror , 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.

Additional info about word: FOCAL

Belonging to,or concerning, a focus; as, a focal point. Focal distance, or length,of a lens or mirror , 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.

Related words: (words related to FOCAL)

• FOCAL
  Belonging to,or concerning, a focus; as, a focal point. Focal distance, or length,of a lens or mirror , 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.
• SURFACE LOADING
  The weight supported per square unit of surface; the quotient obtained by dividing the gross weight, in pounds, of a fully loaded flying machine, by the total area, in square feet, of its supporting surface.
• LENGTHEN
  To extent in length; to make longer in extent or duration; as, to lengthen a line or a road; to lengthen life; -- sometimes followed by out. What if I please to lengthen out his date. Dryden.
• EXACTLY
  In an exact manner; precisely according to a rule, standard, or fact; accurately; strictly; correctly; nicely. "Exactly wrought." Shak. His enemies were pleased, for he had acted exactly as their interests required. Bancroft.
• POINT SWITCH
  A switch made up of a rail from each track, both rails being tapered far back and connected to throw alongside the through rail of either track.
• POINTLESSLY
  Without point.
• POINT-DEVICE; POINT-DEVISE
  Uncommonly nice and exact; precise; particular. You are rather point-devise in your accouterments. Shak. Thus he grew up, in logic point-devise, Perfect in grammar, and in rhetoric nice. Longfellow. (more info) + point point, condition + devis
• LENGTHFUL
  Long. Pope.
• FOCALIZE
  To bring to a focus; to focus; to concentrate. Light is focalized in the eye, sound in the ear. De Quincey.
• POINTAL
  The pistil of a plant. 2. A kind of pencil or style used with the tablets of the Middle Ages. "A pair of tablets . . . and a pointel." Chaucer.
• POINTED
  1. Sharp; having a sharp point; as, a pointed rock. 2. Characterized by sharpness, directness, or pithiness of expression; terse; epigrammatic; especially, directed to a particular person or thing. His moral pleases, not his pointed wit. Pope.
• FOCUS
  A point in which the rays of light meet, after being reflected or refrcted, and at which the image is formed; as, the focus of a lens or mirror. (more info) fireplace; perh. akin to E. bake. Cf. Curfew, Fuel, Fusil the
• LENGTHINESS
  The state or quality of being lengthy; prolixity.
• CENTERING
  See 6
• POINT ALPHABET
  An alphabet for the blind with a system of raised points corresponding to letters.
• POINTSMAN
  A man who has charge of railroad points or switches.
• DISTANCE
  A space marked out in the last part of a race course. The horse that ran the whole field out of distance. L'Estrange. Note: In trotting matches under the rules of the American Association, the distance varies with the conditions of the race, being
• POINTLESS
  Having no point; blunt; wanting keenness; obtuse; as, a pointless sword; a pointless remark. Syn. -- Blunt; obtuse, dull; stupid.
• CENTERBIT; CENTREBIT
  An instrument turning on a center, for boring holes. See Bit, n., 3.
• CONCERNEDLY
  In a concerned manner; solicitously; sympathetically.
• CONCENTER; CONCENTRE
  To come to one point; to meet in, or converge toward, a common center; to have a common center. God, in whom all perfections concenter. Bp. Beveridge.
• SYNOPTIC; SYNOPTICAL
  Affording a general view of the whole, or of the principal parts of a thing; as, a synoptic table; a synoptical statement of an argument. "The synoptic Gospels." Alford. -- Syn*op"tic*al*ly, adv.
• INEXACTLY
  In a manner not exact or precise; inaccurately. R. A. Proctor.
• COVER-POINT
  The fielder in the games of cricket and lacrosse who supports "point."
• UNCONCERNMENT
  The state of being unconcerned, or of having no share or concern; unconcernedness. South.
• SELF-CENTERING; SELF-CENTRING
  Centering in one's self.
• TROIS POINT
  The third point from the outer edge on each player's home table.
• REAPPOINT
  To appoint again.
• STANDPOINT
  A fixed point or station; a basis or fundamental principle; a position from which objects or principles are viewed, and according to which they are compared and judged.
• INTERPOINT
  To point; to mark with stops or pauses; to punctuate. Her sighs should interpoint her words. Daniel.
• ALENGTH
  At full length; lenghtwise. Chaucer.