restriction

n. limitation, state of being restricted; limit, something that restricts

A restriction may refer to:In general usage, a restriction is a specific type of which defines a finite (and generally absolute) boundary defined for a type of process or function.In mathematics, a restriction of a function.In mathematics, a In mathematics, in the context of sheaves, a restriction is a type of function.In business and economics, a restriction is a type of boundary or regulation placed on the trade of certain goods or services.In statistics and econometrics, and most commonly in regression analysis, a restriction is a condition on the variables.in biology, it corresponds to the restriction of the rule of sensibility of bacteria to phages, and therefore corresponds to the means by which the resistance phenomenon occurs : the restriction enzymes.
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Noun
1. a principle that limits the extent of something; "I am willing to accept certain restrictions on my movements"
(synonym) limitation
(hypernym) rule, regulation
(hyponym) quantification
2. an act of limiting or restricting (as by regulation)
(synonym) limitation
(hypernym) regulation, regulating
(hyponym) load-shedding
(derivation) restrict
3. the act of keeping something within specified bounds (by force if necessary)
(hypernym) restraint
(hyponym) classification
(derivation) restrict, restrain, trammel, limit, bound, confine, throttle

n. restriction, limitation; stricture, constriction; constraint, reservation

(n.)
The act of restricting, or state of being restricted; confinement within limits or bounds.
  

(n.)
That which restricts; limitation; restraint; as, restrictions on trade.