acro-

acro-

a combining form with the meanings “height,” “tip end,” “extremities of the body,” used in the formation of compound words: acrophobia.
Also, especially before a vowel, acr-.


Origin:
< Greek, combining form of ákros topmost, highest; akin to Latin ācer sharp. Cf. acme, ear2

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World English Dictionary
acro-
 
combining form
1.  denoting something at a height, summit, top, tip, beginning, or end: acropolis; acrogen
2.  denoting an extremity of the human body: acromegaly
 
[from Greek akros extreme, topmost]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

acro-
from Gk. akro-, comb. form of akros "at the end, at the top" (see acrid).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

acro- or acr-
pref.

  1. Top; summit; height: acrophobia.

  2. Tip; beginning: acrosome.

  3. Extremity of the body: acroparalysis.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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