| autacoid |
any physiologically active internal secretion especially one of uncertain classification
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| Au |
gold: a soft yellow malleable ductile (trivalent and univalent) metallic element; occurs mainly as nuggets in rocks and alluvial deposits; does not react with most chemicals but is attacked by chlorine and aqua regia Astronomical Unit: a unit of length used for distances within the solar system; equal to the mean distance between the Earth and the Sun (approximately 93 million miles or 150 million kilometers)
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| autonomic nervous system |
the part of the nervous system of vertebrates that controls involuntary actions of the smooth muscles and heart and glands
Ãâó: wordnet.princeton.edu/perl/webwn
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| autonomic plexus |
a plexus of sympathetic and parasympathetic nerve fibers
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| AUC |
United Self-Defense Force of Colombia: a terrorist organization in Colombia formed in 1997 as an umbrella for local and regional paramilitary groups; is financed by earnings from narcotics and serves to protect the economic interests of its members; "the AUC conducted over 800 assassinations in one year"
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