Defn: Pertaining to the sending of two messages in opposite directions at the same time.
CONTRAPOSITION Con"tra*po*si"tion, n. Etym: [Pref. contra- + position: cf. f. conterposition.]
1. A placing over against; opposite position. [Obs.] F. Potter.
2. (Logic)
Defn: A so-called immediate inference which consists in denying the original subject of the contradictory predicate; e.g.: Every S is P; therefore, no Not-P is S.
CONTRAPTION
Con*trap"tion, n.
Defn: A contrivance; a new-fangled device; — used scornfully.
[Colloq. or Dial.] — Con*trap"tious (#), a.
We all remember some of the extraordinary contraptions which have been thus evolved and put upon the market. F. M. Ware.
CONTRAPUNTAL
Con`tra*pun"tal, a. Etym: [It. contrappunto counterpoint. See
Counterpoint.] (Mus.)
Defn: Pertaining to, or according to the rules of, counterpoint.