ca|pit|u|lum «kuh PIHCH uh luhm», noun, plural -la «-luh».
1. a flower head consisting of a close cluster of sessile flowers, as in red clover or many composite plants.
2. the protuberance of a bone usually fitting into a hollow portion of another bone: »
They articulate with the heads, or the capitula, of the ribs (St. George Mivart).
Useful english dictionary. 2012.