Word Meanings - ASTIGMATISM - Book Publishers vocabulary database

A defect of the eye or of a lens, in consequence of which the rays derived from one point are not brought to a single focal point, thus causing imperfect images or indistictness of vision. Note: The term is applied especially to the defect causing

Additional info about word: ASTIGMATISM

A defect of the eye or of a lens, in consequence of which the rays derived from one point are not brought to a single focal point, thus causing imperfect images or indistictness of vision. Note: The term is applied especially to the defect causing images of lines having a certain direction to be indistinct, or imperfectly seen, while those of lines transverse to the former are distinct, or clearly seen.

Related words: (words related to ASTIGMATISM)

• CAUSEFUL
  Having a cause.
• APPLICABLE
  Capable of being applied; fit or suitable to be applied; having relevance; as, this observation is applicable to the case under consideration. -- Ap"pli*ca*ble*ness, n. -- Ap"pli*ca*bly, adv.
• DERIVATIVE
  Obtained by derivation; derived; not radical, original, or fundamental; originating, deduced, or formed from something else; secondary; as, a derivative conveyance; a derivative word. Derivative circulation, a modification of the circulation found
• 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.
• SINGLE-BREASTED
  Lapping over the breast only far enough to permit of buttoning, and having buttons on one edge only; as, a single-breasted coast.
• VISIONARY
  1. Of or pertaining to a visions or visions; characterized by, appropriate to, or favorable for, visions. The visionary hour When musing midnight reigns. Thomson. 2. Affected by phantoms; disposed to receive impressions on the imagination; given
• CAUSATIVE
  1. Effective, as a cause or agent; causing. Causative in nature of a number of effects. Bacon. 2. Expressing a cause or reason; causal; as, the ablative is a causative case.
• APPLICATIVE
  Having of being applied or used; applying; applicatory; practical. Bramhall. -- Ap"pli*ca*tive*ly, adv.
• CAUSEWAYED; CAUSEYED
  Having a raised way ; paved. Sir W. Scott. C. Bronté.
• APPLICANCY
  The quality or state of being applicable.
• DEFECTIONIST
  One who advocates or encourages defection.
• 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.
• CAUSATOR
  One who causes. Sir T. Browne.
• POINTLESSLY
  Without point.
• APPLICABILITY
  The quality of being applicable or fit to be applied.
• DEFECTUOSITY
  Great imperfection. W. Montagu.
• 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
• DEFECTIBILITY
  Deficiency; imperfection. Ld. Digby. Jer. Taylor.
• 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.
• ANTICAUSODIC
  See ANTICAUSOTIC
• INCONSEQUENCE
  The quality or state of being inconsequent; want of just or logical inference or argument; inconclusiveness. Bp. Stillingfleet. Strange, that you should not see the inconsequence of your own reasoning! Bp. Hurd.
• UNAPPLIABLE
  Inapplicable. Milton.
• COVER-POINT
  The fielder in the games of cricket and lacrosse who supports "point."
• INDEFECTIBLE
  Not defectible; unfailing; not liable to defect, failure, or decay. An indefectible treasure in the heavens. Barrow. A state of indefectible virtue and happiness. S. Clarke.
• REAPPLICATION
  The act of reapplying, or the state of being reapplied.
• MISDIVISION
  Wrong division.
• DIVISIONARY
  Divisional.