cœlospermous,a.Bot.|siːləʊˈspɜːməs| [f.prec. + -ous.] Hollow-seeded; having the seed, or seed-like fruit, hemispherical, and excavated on the flat side, as in coriander. Treas.Bot. 1866. 1859Darwin Orig.Spec. v. 146 The seeds being in some cases cœlospermous in the central flowers.