- Trioctile Tri*oc"tile (-[o^]k"t[i^]l), n. [Pref. tri- + octile.] (Astrol.) An aspect of two planets with regard to the earth when they are three octants, or three eighths of a circle, that is, 135 degrees, distant from each other. --Hutton. [1913 Webster]
The Collaborative International Dictionary of English. 2000.