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Shaped like a half moon. Semilunar bone (Anat.), a bone of the carpus; the lunar. See Lunar, n. -- Semilunar, or Sigmoid, valves (Anat.), the valves at the beginning of the aorta and of the pulmonary artery which prevent the blood from flowing back into the ventricle.

A name of several shrubs with white berries; as, the Symphoricarpus racemosus of the Northern United States, and the Chiococca racemosa of Florida and tropical America. Creeping snowberry. (Bot.) See under Creeping.

Situated above, or in the upper part of, the carpus.

A coniferous tree (Podocarpus totara), next to the kauri the most valuable timber tree of New Zeland. Its hard reddish wood is used for furniture and building, esp. in wharves, bridges, etc. Also mahogany pine.

A bone of the carpus at the base of the first metacarpal, or thumb.

A bone of the carpus at the base of the second metacarpal, or index finger.

One of the bones of the carpus; the cuneiform. See Cuneiform (b).

One of the bones or cartilages of the carpus, which articulates with the ulna and corresponds to the cuneiform in man.

a hook; being of a curved or hooked from; hooklike. Unciform bone (Anat.), a bone of the carpus at the bases of the fourth and fifth metacarpals; the hamatum.

An American shrub (Symphoricarpus occidentalis) which bears soft white berries.

od oil (Bot.), a resinous oil obtained from several East Indian trees of the genus Dipterocarpus, having properties similar to those of copaiba, and sometimes substituted for it. It is also used for mixing paint. See Gurjun. -- Wood opal (Min.), a striped variety of coarse opal, having some resemblance to wood. -- Wo…

The joint, or the region of the joint, between the hand and the arm; the carpus. See Carpus. He took me by the wrist, and held me hard. Shak.

A West Indian name for two large timber trees (Podocarpus coriaceus, and P. Purdicanus) of the Yew family. The wood, which is much used, is pale brownish with darker streaks.

Flindersia Oxleyana, a tree related to the mahogany; certain South African species of Podocarpus, trees related to the yew; the East Indian Podocarpus latifolia; and the true satinwood (Chloroxylon Swietenia). All these Old World trees furnish valuable timber.