sodium alum
(mineralogy) A water-soluble mineral NaAl(SO₄)₂·12(H₂O); a form of alum in which potassium is replaced by sodium.
(algebra) An expression that gives information about the roots of a polynomial; for example, the expression D = b² - 4ac determines whether the roots of the quadratic equation ax² + bx + c = 0 are ...
plural of anchor shot
present participle of unencode
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