(Current) p < α, where p is the probability of obtaining a result as extreme as, or more extreme than, the one actually observed, given that the null hypothesis, Ho, is true, and α is the arbitrarily chosen small probability of rejecting a true null. (Archaic) The meaning of a word or sentence, or the quality of bearing that meaning; the degree to which an object deserves study, attention, and care—its use to humankind.