Definition of RUBRIC

a word or series of words often in larger letters placed at the beginning of a passage or at the top of a page in order to introduce or categorize <the rubrics at the beginning of the chapters are intended to be humorous>
an inherited or established way of thinking, feeling, or doing <the rubric, popular among jewelers anyway, that a man should spend a month's salary on his fiancée's engagement ring>
one of the units into which a whole is divided on the basis of a common characteristic <all of these books with their conspiracy theories fall under the rubric of speculative fiction>

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