divided into either two or three parts
• (a.) Divided into twos or threes. • (a.) Dividing into double or treble ramifications; -- said of a leaf or stem.
Di`tri·chot'o·mous adjective [ Prefix di- + trichotomous .] 1. Divided into twos or threes. 2. (Botany) Dividing into double or treble ramifications; -- said of a leaf or stem. [ R.] Loudon.