(organic chemistry) A rule describing the outcome of certain addition reactions in organic chemistry.

plural of work-to-rule

plural of batter rule

An instrument consisting of a rule or frame, and a plumb line, by which the batter or slope of a wall is regulated in building.

plural of mob rule

The principle that anything is acceptable to do, use, wear etc. so long as it is cool.

plural of gag rule

A rule that limits or forbids the consideration or discussion of a particular topic by members of a legislative or decision-making body.

A rule stating that the use of prior probabilities of 0 or 1 should be avoided, except when applied to statements that are logically true or false, so as to leave room for the possibility that something very unlikely is in fact the case.

(electronics) A rule describing the relationship between the number of external signal connections to a logic block (i.e. the number of "pins") with the number of logic gates in the logic block.