Dictionary:

capitulum

  (kə-pĭch'ə-ləm)

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1. Botany. See flower head (sense 1).
2. Biology. A small knob or head-shaped part, such as a protuberance of a bone or the tip of an insect's antenna.

[Latin, diminutive of caput, capit-, head.]

A small head. The term used by some European writers instead of head or condyle.

A small, rounded end of a bone that articulates with another bone.

Pl. capitula [L.] a small eminence on a bone, as on the distal end of the humerus, by which it articulates with another bone.

• c. humeri — the small articular part of the lateral distal end of the humerus that articulates with the radius.
• vertebral c. — one of the articular prominences at the vertebral end of a rib.

The term Capitulum can refer to several things:

• In botany, a type of flower head where the bracts are located under the basis, such as a Daisy's
• In anatomy, the Capitulum of the humerus
• The Latin word for a Chapter
• In entomology, a structure similar to an elaiosome found on the eggs of some species of stick insects, like the genus Bacteria, which encourages ants to pick them up and carry them away. The ants bury the eggs, where they are less likely to be parasitized by wasps

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