Verb

(en verb)

To restrain within bounds; to limit; to confine; as, to restrict worlds to a particular meaning; to restrict a patient to a certain diet.

* {{quote-news

, year=2011 , date=September 28 , author=Jon Smith , title=Valencia 1 - 1 Chelsea , work=BBC Sport citation , page= , passage=It was no less than Valencia deserved after dominating possession in the final 20 minutes although Chelsea defended resolutely and restricted the Spanish side to shooting from long range.}}

(specifically, mathematics) To consider (a function) as defined on a subset of its original domain.

If we restrict sine to $[-\backslash frac\backslash pi2,\backslash frac\backslash pi2]$, we can define its inverse.

Verb

(regulat)

To dictate policy.

To control or direct according to rule, principle, or law.

* Macaulay

the laws which regulate the successions of the seasons

* Bancroft

The herdsmen near the frontier adjudicated their own disputes, and regulated their own police.

To adjust to a particular specification or requirement: regulate temperature.

To adjust (a mechanism) for accurate and proper functioning.

to regulate a watch, i.e. adjust its rate of running so that it will keep approximately standard time

to regulate the temperature of a room, the pressure of steam, the speed of a machine, etc.

To put or maintain in order.

to regulate the disordered state of a nation or its finances

to regulate one's eating habits