Posterior comes from the Latin word posterus, meaning "coming after". Posterior is often used as a technical term in biology and medicine to refer to the back side of things, and is the opposite of …

POSTERIOR definition: situated behind or at the rear of; hinder (anterior ). See examples of posterior used in a sentence.

POSTERIOR meaning: 1. positioned at or towards the back 2. later in time 3. your bottom: . Learn more.

posterior in American English (pɑsˈtɪriər ) adjective Origin: L, compar. of posterus, following < post, after: see post-

posterior (pɒˈstɪərɪə) adj 1. situated at the back of or behind something 2. coming after or following another in a series

There are nine meanings listed in OED's entry for the word posterior, four of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

pos•te•ri•or /pɑˈstɪriɚ, poʊ-/ adj. [before a noun] located behind or at the rear of. coming after (something) in order or in time; later. n. [countable] Anatomy the lower, bottom parts or rump of the …