Tylar´i, n. pl. Pads under the toes. (123.)

Tym´panic (bone), a. for n. Same as Os Quadratum (which see).

Tym´panum, n. Ear-drum. Also, the naked inflatable air-sacs on the sides of the neck of grouse, an enlargement of the ordinary cervical reservoirs of air which communicate with the bronchi.

Type, n. Way; plan; mode. Also, sign or symbol. The type, or typical form, of a group is that which exhibits a given set of characters most perfectly. But the type of a genus is usually the species, if any, from which the generic characters were especially drawn up, without reference to such qualification; while, furthermore, the type of a species, in current acceptation, is merely the specimen from which the species was originally described, even though it may very inadequately represent such species.

Typ´ical, a. Of most usual structure; adhering strictly to a given plan of structure. (But compare Type.)

U.

Ul´na, n. Inner or posterior bone of forearm.

Ul´nar, a. Pertaining to the ulna.

Umbil´ical, a. Relating to the umbilicus.

Umbil´icate, a. Pitted, as if with an umbilicus.