bostrychoid, -al,a.Bot.|bɒstrɪˈkɔɪd, -əl| [f.Gr. βόστρυχ-ος curl or lock of hair + -oid + -al1.] ‘Having the form or character of a ringlet or bostryx.’ Gray Bot.Text-bk. 1880. 1875A. W. Bennett tr.Sachs's Botany 157 A Helicoid (bostrychoid) Dichotomy.