adj. 1. Essential or necessary for completeness; constituent: The kitchen is an integral part of a house. 2. Possessing everything essential; entire. 3. (ĭntĭ-grəl) Mathematics a. Expressed or expressible as or in terms of integers. b. Expressed as or involving integrals. n. 1. A complete unit; a whole. 2. (ĭntĭ-grəl) Mathematics a. A number computed by a limiting process in which the domain of a function, often an interval or planar region, is divided into arbitrarily small units, the value of the function at a point in each unit is multiplied by the linear or areal measurement of that unit, and all such products are summed. b. A definite integral. c. An indefinite integral. [Middle English, from Old French, from Medieval Latin integrālis, making up a whole, from Latin integer, complete; see INTEGER.] in′te·grali·ty (-grălĭ-tē) n. inte·gral·ly adv. |
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