simple past tense and past participle of coact

(astronomy, especially Asia) A bright circumpolar asterism of the northern sky, said to resemble a ladle. It is part of the constellation Ursa Major and includes the stars Alkaid, Mizar, Alioth, Me...

The state or quality of being superfluous.

(physics) Of two or more liquids that are not mutually soluble: unmixable.