a. Bot. [f. THYRS-US + -OID: cf. Gr. θυρσοειδής thyrsus-like (Dioscorides).] Of the form of, or resembling, a thyrsus or contracted panicle. So Thyrsoidal a.
1830. Lindley, Nat. Syst. Bot., 61. Flowers terminal, usually thyrsoid.
1864. Webster, Thyrsoid, Thyrsoidal.
1870. Hooker, Stud. Flora, 238. Privet … Flowers in terminal thyrsoid cymes.
