from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Botany See flower head.
- n. Biology A small knob or head-shaped part, such as a protuberance of a bone or the tip of an insect's antenna.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A densely clustered inflorescence composed of a large number of individual florets arising from a platform-like base.
- n. The head-like mouthpart apparatus of a tick, including the palpi, mandibles, and hypostome.
- n. A small protuberance on a bone which articulates into another bone to form a ball-and-socket joint.
- n. The enlarged end of a proboscis.
from the GNU version of the Collaborative International Dictionary of English
- n. 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.
- n. A knoblike protuberance of any part, esp. at the end of a bone or cartilage. [See Illust. of Artiodactyla.]
from The Century Dictionary and Cyclopedia
- n. In anatomy, the head of a bone; especially, the head of a rib, as distinguished from its shoulder or tuberculum. Also called capitellum. See cut under endoskeleton.
- n. In Cirripedia, specifically, the valves of the shell collectively, inclosing more or less of the body of the animal, as distinguished from the peduncular part of the creature.
- n. In botany, a close head of sessile flowers, as in the Compositæ; also, as used by some early botanists, the receptacle of various fungi; in mosses, a close, dense cluster of leaves. Also called capitule.
- n. In entomology: The enlarged terminal portion of the halter or poiser of a dipterous insect
- n. The enlarged terminal portion of the sucking mouth of a fly, formed by two suctorial flaps called labella.
- n. The knob at the end of a capitate antenna.
- n. One of the stalked spheroidal sporangia of certain mycetozoans.
- n. In actinians, the upper part of the column as distinguished from the scapus.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. fruiting spike of a cereal plant especially corn
- n. a dense cluster of flowers or foliage
- n. an arrangement of leafy branches forming the top or head of a tree
Above the front part of the capitulum is a slight depression, the radial fossa, which receives the anterior border of the head of the radius, when the forearm is flexed.
Vespers, that is, the capitulum, hymn, antiphon of the "Magnificat", is taken from the Sanctorale.
Greek Fathers, (as "capitulum" by the Latins,) to denote a passage of
I could with but slight difficulty find my way back to Jon IV, or Jon X, or Jon CLXXVI, Dei gratia capitulum, but Messrs. D & M do not even accord me that exiguous courtesy.
Nevertheless, at all adventures they rang the bells ad capitulum capitulantes.
 Cramer, 'Bildungsabweichungen,' p. 56, tab. vii, fig. 10, figures a case wherein the two central flowers of the capitulum of _Centaurea
I owe to Mr. Berkeley the communication of a capitulum of a species of _Bidens_, in which there was a transition from the form of ligulate corollas to those that were deeply divided into three, four, or five oblong lobes.
A less degree of this change wherein a few flowers may be found, as it were, detached from the ordinary capitulum may often be observed in
"Item sunt alie expense facte in Curiis Regis annuatim pro officio generalis procuratoris in diversis Curiis Regis, que de necessitate fieri oportet, pro brevibus Regis, et Cartis impetendis, et aliis, negociis in eisdem Curiis expediendis, que ad minus ascendunt per annum, prout evidencius apparet, per compotum et memoranda dicti fratris de Scaccario qui per capitulum ad illud officium oneratur ... lx m."
The joint between the head of the radius and the capitulum of the humerus is an arthrodial joint.