S: (n) probability (probability%1:07:01::), chance (chance%1:07:00::) (a measure of how likely it is that some event will occur; a number expressing the ratio of favorable cases to the whole number of cases possible) "the probability that an unbiased coin will fall with the head up is 0.5"; "if that phone call is for me, chances are it's my wife"
S: (n) quantum (quantum%1:09:00::) ((physics) the smallest discrete quantity of some physical property that a system can possess (according to quantum theory))
S: (n) quantity (quantity%1:07:00::) (an adequate or large amount) "he had a quantity of ammunition"
S: (n) quantity (quantity%1:09:01::) (the concept that something has a magnitude and can be represented in mathematical expressions by a constant or a variable)