integral

Reading level: hard

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

noun the result of a mathematical integration; F(x) is the integral of f(x) if dF/dx = f(x)
adjective existing as an essential constituent or characteristic
adjective constituting the undiminished entirety; lacking nothing essential especially not damaged; - Bacon

Borrowed from Middle French integral, from Medieval Latin integrālis, from Latin integer (“entire”); see integer.

It forms an integral part of the duties of an officer. — Anna Karenina, Leo, graf Tolstoy
I am for her an indispensable, integral part of her boudoir." — The Duel and Other Stories, Anton Pavlovich Chekhov
She seems an integral part of the prairie, broad-bosomed, fecund, opulent. — The Prairie Wife, Arthur Stringer

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