u·pas (y  p s)n. 1. A deciduous tree (Antiaris toxicaria) of tropical Africa and Asia that yields a latex used as an arrow poison. 2. The poison obtained from this tree or from similar trees. [Malay (pohun) upas, poison (tree), of Javanese origin.] |
upas [ˈjuːpəs]
n
1. (Life Sciences & Allied Applications / Plants) a large moraceous tree of Java, Antiaria toxicaria, having whitish bark and poisonous milky sap
2. (Chemistry / Elements & Compounds) the sap of this tree, used as an arrow poison Also called antiar
[from Malay: poison]
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