What is the meaning of Exact?

Precisely agreeing with a standard, a fact, or the truth; perfectly conforming; neither exceeding nor falling short in any respect.

Habitually careful to agree with a standard, a rule, or a promise; accurate; methodical; punctual.

Precisely or definitely conceived or stated; strict.

Such that the kernel of each morphism is the image of the preceding one.

Such that it preserves short exact sequences.

To demand and enforce the payment or performance of, sometimes in a forcible or imperious way.

To make desirable or necessary.

To inflict; to forcibly obtain or produce; to visit.

exactly

exact, precise

exact; precise

exact, precise

exactly, precisely

Source: wiktionary.org