See Also: quadraphonic(dictionary)
quadraphonic(dictionary)
concave(dictionary)
concave(dictionary)
concave(2)(dictionary)
concave(1)(dictionary)
Concave(money)
Concave(medicine)
concave mirror(medicine)
concave lens(medicine)

concave(1) (iou) and quadraphonic (iou)


concave(1) (iou)



concave adjective. LME.
[Latin concavus, formed as CON- + cavus hollow (perh. through Old & mod. French concave).]
Having an internal cavity; hollow. LME-M17.
Having an outline or surface curved like the interior of a circle or sphere; the reverse of convex. LME.
concave lens, concave mirror, etc.
concavely adverb L19.
concaveness noun M18.

quadraphonic (iou)



quadraphonic adjective. Also quadrophonic. M20.
[from QUADRI- after stereophonic etc.]
Audio. Produced by, pertaining to, or designating a system of sound recording and reproduction that uses four signal sources and four loudspeakers, enabling both front-to-back and side-to-side sound distribution to be reproduced.
quadraphonically adverb L20.
quadraphonics noun pl. (usu. treated as sing.) = quadraphony L20.
quadraphony noun quadraphonic reproduction; the use of quadraphonic techniques: M20.