rf
English Thesaurus
1. a complex neural network in the central core of the brainstem; monitors the state of the body and functions in such processes as arousal and sleep and attention and muscle tone (noun.body)
hypernym | : | neural net, neural network, |
definition | : | any network of neurons or nuclei that function together to perform some function in the body (noun.body) |
part holonym | : | ras, reticular activating system, |
definition | : | the network in the reticular formation that serves an alerting or arousal function (noun.body) |
part meronym | : | brain stem, brain-stem, brainstem, |
definition | : | the part of the brain continuous with the spinal cord and comprising the medulla oblongata and pons and midbrain and parts of the hypothalamus (noun.body) |
2. a radioactive transuranic element which has been synthesized (noun.substance)
hypernym | : | chemical element, element, |
definition | : | any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter (noun.substance) |
3. a substance produced by the hypothalamus that is capable of accelerating the secretion of a given hormone by the anterior pituitary gland (noun.substance)
hypernym | : | factor, |
definition | : | anything that contributes causally to a result (noun.event) |
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