floral envelope flo·ra·len·velope uncommon noun 1. collective term for the outer parts of a flower consisting of the calyx and corolla and enclosing the stamens and pistils Synonymsperianthchlamysfloral envelopeperigoneperigonium Related words Broader terms plant organcovering Parts flower Part of corollacalyx WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
