liothyronine
- n thyroid hormone similar to thyroxine but with one less iodine atom per molecule and produced in smaller quantity; exerts the same biological effects as thyroxine but is more potent and briefer
lip
- n either of two fleshy folds of tissue that surround the mouth and play a role in speaking
- n (botany) either of the two parts of a bilabiate corolla or calyx
- n an impudent or insolent rejoinder
- n the top edge of a vessel or other container
- n either the outer margin or the inner margin of the aperture of a gastropod's shell
lip fern
- n any of various terrestrial ferns of the genus Cheilanthes; cosmopolitan in arid and semiarid temperate or tropical regions
lip reader
- n someone who can understand spoken words by watching the movements of a speaker's lips
lip service
- n an expression of agreement that is not supported by real conviction
lip sync
- n combining audio and video recording in such a way that the sound is perfectly synchronized with the action that produced it; especially synchronizing the movements of a speaker's lips with the sound of his speech