|a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.|
|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
|—n , pl -mi|
|1.||either of the two contiguous egg-shaped masses of grey matter at the base of the brain|
|2.||both of these masses considered as a functional unit|
|3.||the receptacle or torus of a flower|
|[C18: from Latin, Greek thalamos inner room; probably related to Greek tholos vault]|
thalamus thal·a·mus (thāl'ə-məs)
n. pl. thal·a·mi (-mī')
A large ovoid mass of gray matter that forms the larger dorsal subdivision of the diencephalon and is located medial to the internal capsule and to the body and tail of the caudate nucleus. It functions in the relay of sensory impulses to the cerebral cortex.
|thalamus (thāl'ə-məs) Pronunciation Key
Plural thalami (thāl'ə-mī')
The part of the vertebrate brain that lies at the rear of the forebrain. It relays sensory information to the cerebral cortex and regulates the perception of touch, pain, and temperature.