a. Anc. Pros. [f. Gr. τρίχρον-ος, of three times or measures (f. τρι-, TRI- + χρόνος time) + -OUS.] Containing or consisting of three times or moræ; having the duration of three short syllables: = TRISEMIC.
1889. Cent. Dict., s.v. Dichronous, A dichronous long (that is, an ordinary long, equal to two shorts, distinguished from a trichronous or other protracted long).