a subordinate clause introduced by a relative pronoun, adjective, or adverb, either expressed or deleted, especially such a clause modifying an antecedent, as who saw you in He’s the man who saw you or (that) I wrote in Here’s the letter (that) I wrote.
noun, Mathematics. 1. the set of elements contained in a given set that are not elements of another specified set.
noun, Physics. 1. specific gravity. relative density noun 1. the ratio of the density of a substance to the density of a standard substance under specified conditions. For liquids and solids the standard is usually water at 4°C or some other specified temperature. For gases the standard is often air or hydrogen at the same […]
noun, Sociology. 1. the perception of an unfair disparity between one’s situation and that of others.
noun, Optics. 1. Abbe number. noun, Optics. 1. the reciprocal of the dispersive power of a substance.