Capitulum /(kȧ*pĭt"ū̇*lŭm)/

pl. Capitula ((kȧ*pĭt"ū̇*lȧ))

1. A thick head of flowers on a very short axis, as a clover top, or a dandelion; a composite flower. A capitulum may be either globular or flat.
2. A knoblike protuberance of any part, esp. at the end of a bone or cartilage. [See Illust. of Artiodactyla.] (Anat.)