a posteriori (ay pos-teer-ee-or-Ior ah pos-teer-ee-or-ee), adv. [Latin “from what comes after”] Inductively; from the particular to the general, or from known effects to their inferred causes (as a legal analyst, she reasoned a posteriori — from countless individual cases to generalized rules that she finally applied). Cf. A PRIORI. — a posteriori, adj.
posteriority (pah-steer-ee-or-[schwa]-tee). The condition or state of being subsequent. • This word was formerly used to describe the relationships existing between a tenant and the two or more lords the tenant held of; the tenant held the older tenancy “by priority” and the more recent one “by posteriority.”
a priori (ay prI-or-Ior ah pree-or-ee), adv. [Latin “from what is before”] Deductively; from the general to the particular (as an analyst, he reasoned a priori — from seemingly self-evident propositions to particular conclu-sions). Cf. A POSTERIORI. — a priori, adj.