trigrams

Noun

trigram (plural trigrams)

1. A trigraph, a sequence of three letters representing one phoneme.
2. An n-gram consisting of three items from a sequence.
   • In fact, half of all such words for this corpus are initiated by only 39 different trigrams!1974, Edward C. Carterette, Margaret Hubbard Jones, Informal Speech: Alphabetic & Phonemic Texts with Statistical Analyses and Tables, University of California Press, →ISBN, page 44
3. (divination) Any of the eight combinations of three complete or broken lines forming half of a hexagram in Chinese system of divination I Ching.