You know what it looks like… but what is it called?
TAKE THE QUIZ“rule of”
The following 11 entries include the term rule of.
rule of the road
noun phrase: a customary practice (such as driving always on a particular side of the road or yielding the right of way) developed in the interest of safety and often subsequently reinforced by law
rule of thumb
noun phrase: a method of procedure based on experience and common sense
Descartes's rule of signs
: a rule of algebra: in an algebraic equation with real coefficients, F(x) = 0, arranged according to powers of x, the number of positive roots cannot exceed the number of variations in the signs of the coefficients of the various powers and the difference between the number of positive roots and the number of variations in the signs of the coefficients is even
rule of adjunction
: a rule in logic: if each of two statements (as p and q) has been asserted then their conjunct (as p‧q) may be asserted
rule of deduction
rule of eleven
: a rule in bridge and whist: when a player leads his fourth-best card of a suit the number of its spots subtracted from eleven gives the number of higher cards of the same suit not in the leader's hand
rule of faith
: a standard for testing truth in religion
rule of the air
: a provision of the code of regulations governing matters of air traffic (as the meeting and overtaking of other aircraft, the use of defined air lanes of travel, or the height of flying over cities)
rule of three
: a rule in mathematics: the product of the means in a proportion equals the product of the extremes —used for finding the fourth term of a proportion where three are given
rule of two and three
: a bidding principle in contract bridge: a player who makes a preemptive bid should not overbid by more than two tricks when vulnerable or three tricks when not vulnerable
rule of law
noun phrase: a situation in which the laws of a country are obeyed by everyone
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- Before we went to her house, Hannah told us her aunt was a flibbertigibbet.
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Merriam-Webster unabridged
