a. Bot. [f. SYN- after DIŒCIOUS, MONŒCIOUS; cf. Gr. συνοικία a community of persons living together.] Having male and female flowers in the same flower-head, as some Compositæ, or male and female organs in the same receptacle, as some mosses.
1863. M. J. Berkeley, Brit. Mosses, ii. 6. Mosses … are … in some rare cases synœcious.
