انقاس doesn't appear in Hans Wehr's Modern Standard Arabic dictionary, but Lane's Arabic-English Lexicon has an entry for it. Select the entry below for the full classical Arabic definition.

• انقاس Form 7

  7 انقاس ذ It was, or became, measured by another thing like it. (S, in art. قوس; and K, in the present art.) -b2- (assumed tropical:) [It was, or became, determined, or judged of, by comparison, or analogy.] You say, هٰذ…

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