trilogy

• POS: Noun
• HYPHEN: tril=o=gy

CIDE DICTIONARY

trilogy, n. [Gr. trilogi`a; pref. tri- (see Tri-) + lo`gos speech, discourse: cf. F. trilogie.].

 A series of three dramas which, although each of them is in one sense complete, have a close mutual relation, and form one historical and poetical picture. Shakespeare's “ Henry VI.” is an example.  [1913 Webster]
"On the Greek stage, a drama, or acted story, consisted in reality of three dramas, called together a trilogy, and performed consecutively in the course of one day."  [1913 Webster]

OXFORD DICTIONARY

trilogy, n. (pl. -ies)
1 a group of three related literary or operatic works.
2 Gk Antiq. a set of three tragedies performed as a group.

Etymology

Gk trilogia (as TRI-, -LOGY)

THESAURUS

trilogy

clover, deuce-ace, leash, set of three, shamrock, tercet, ternary, ternion, terzetto, three, threesome, tierce, trefoil, trey, triad, trialogue, triangle, tricorn, trident, triennium, trihedron, trimester, trine, trinity, trinomial, trio, triphthong, triple crown, triple threat, triplet, triplopy, tripod, triptych, trireme, triseme, triskelion, trisul, triumvirate, triunity, trivet, troika