Insesso´rial, a. Relating to perching-birds.
Insis´tent, a. Said of the hind toe, when its base is so elevated that the tip only touches the ground. (130.)
In´stinct, n. Imperfect reason; the faculty of doing the right thing without knowing why.
Integ´ument, n. A covering or envelope; commonly, the skin.
Inter- (in composition). Between; among.
Interartic´ular, a. Between the joints; in a joint; as, interarticular cartilage.
Intercos´tal, a. Between two ribs; as, intercostal muscle, artery, vein.
Intermax´illary (bone), n. Same as Premaxillary (which see).
In´ternode, n. Any bone of a finger or toe.
Interor´bital, a. Between the eye-sockets.