trinoctial (ti as sh)

[Lat. tri =three, and nox (gen it. noctis )=a night.] Comprising three nights. *tri-nō-da, s. [Latin tri three, and nodus =a knot.) An old land measure equal to three perches. *trinoda-nece itas, s. A term signifying the three services due to the king in Anglo-Saxon times in respect of tenure of lands in England, for the repair of bridges and highways, the building and repair of fortre es, and expeditions against the king's enemies. tri-nō-dal, a. [TRINODA.] Bot .: Having three nodes only. Used spec. of a peduncle supporting the cyme of a monocotyledon. tri-nō-mi-al, a. & s. [Gr. tri- =three, and nome =a division; nemō -to divide, to distribute.] IMG:content-1456.jpg:[graphic] A. As adjective : Alg .: Consisting of three terms, connected by the signs+or; thus, a +b+ c , x2+ 2xy + y2 are trinomial expre ions. B. As subst.: An algebraic expre ion consisting of three terms.