a potiori

(of an argument) from the stronger or more important; according to the majority

(grammar) The use of the more generic category (for agreement) with combinations of words from two or more selective categories (such as gender). For example Each boy or girl took his book., or in French Le manteau et la robe sont verts, mais les chaussures ne sont pas vertes. (The (masculine) coat and the (feminine) dress are (masculine plural) green, but the (feminine plural) shoes are not (feminine plural) green.)