- Anat. a membranous covering or envelope
- Bot. a ring of small leaves, or bracts, at the base of a flower, flower cluster, or fruit: involucres are found in all plants of the composite family
Origin of involucreFrench ; from Classical Latin involucrum, wrapper, case, envelope ; from involvere: see involve
Origin of involucreFrench, from Latin invol&umacron;crum, wrapper, envelope; see involucrum.
- in′vo·lu′cral , in′vo·lu′crate