cœlospermousadj.

/siːləʊˈspəːməs/Etymology: < cœlosperm n. + -ous suffix.
Botany.
1859 C. Darwin v. 146 The seeds being in some cases cœlospermous in the central flowers.
This entry has not yet been fully updated (first published 1891; most recently modified version published online June 2018).