n. [ Pref. tri- + -gram. ] Same as Trigraph. [ 1913 Webster ]
a. [ Gr. &unr_;; &unr_; + &unr_; a letter. ] Containing three letters or characters, or three sets of letters or characters. [ 1913 Webster ]
a. [ Gr. &unr_;. See Trigrammatic. ] Same as Trigrammatic. [ 1913 Webster ]