Antecedent meaning : Any thing that precedes another thing, especially the cause of the second thing. An ancestor. (grammar) A word, phrase or clause referred to by a pronoun. The conditional part of a hypothetical proposition, i.e. p \rightarrow q, where p is the antecedent, and q is the consequent. The first of two subsets of a sequent, consisting of all the sequent's formulae which are valuated as true. The first term of a ratio, i.e. the term a in the ratio a:b, the other being the consequent. (chiefly in the plural) Previous principles, conduct, history, etc. Earlier, either in time or in order. Presumptive.