Etymology
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an- (1)

privative prefix, from Greek an-, "not, without" (from PIE root *ne- "not"). The Greek prefix is a fuller form of the one represented in English by a- (3).

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an- (2)

a later form of Latin ad "to" before -n- (see ad-), as in annex, announce, annihilate.

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ana- 

before vowels an-, word-forming element meaning: 1. "upward, up in place or time," 2. "back, backward, against," 3. "again, anew," from Greek ana (prep.) "up, on, upon; up to, toward; throughout; back, backwards; again, anew," from an extended form of PIE root *an- (1) "on, upon, above" (see on, which is the English cognate). In old medical prescriptions, ana by itself meant "an equal quantity of each."

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andro- 

word-forming element meaning "man, male, masculine," from Greek andro-, combining form of anēr (genitive andros) "a man, a male" (as opposed to a woman, a youth, or a god), from PIE root *ner- (2) "man," also "vigorous, vital, strong."

Equivalent to Latin vir (see virile). Sometimes in later use it was equivalent to Greek anthrōpos, Latin homo "a person, a human being," and in compounds it often retain this genderless sense (e.g. androcephalous "having a human head," said of monsters including the Sphinx, which in Greece was female).

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anemo- 

before vowels anem-, word-forming element meaning "wind," from Greek anemos "wind," from PIE root *ane- "to breathe."

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angio- 

before vowels angi-, word-forming element meaning "vessel of the body," now often "covered or enclosed by a seed or blood vessel," from Latinized form of Greek angeion "case, capsule, vessel of the body," diminutive of angos "vessel, jar, vat, vase," which is of unknown origin. Beekes says "Possibly a Mediterranean loanword ..., as kitchen utensils are often borrowed."

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aniso- 

word-forming element meaning "unequal, not equal," from Greek anisos "not equal," from an- "not" (see an- (1)) + isos "equal to, the same as" (see iso-).

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anomalo- 

word-forming element meaning "deviating from the usual, abnormal," from Greek anomalos "uneven, irregular" (see anomaly).

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anomo- 

word-forming element meaning "irregular, unusual," from Greek anomos, from a- "without" (see a- (3)) + nomos "law," from PIE root *nem- "assign, allot; take."

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ante- 

word-forming element meaning "before, in front of; previous, existing beforehand; introductory to," from Latin ante (prep., adv.) "before (in place or time), in front of, against," also used in compounds, from PIE *anti- "facing opposite, against," inflected form (locative singular) of root *ant- "front, forehead," with derivatives meaning "in front of, before."

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