WordReference Random House Unabridged Dictionary of American English © 2017
acro-, 
  • a combining form with the meanings "height,'' "tip end,'' "extremities of the body,'' used in the formation of compound words:acrophobia.Also,[esp. before a vowel,] acr-. 
    • Greek, combining form of ákros topmost, highest; akin to Latin ācer sharp. Cf. acme, ear2


    Collins Concise English Dictionary © HarperCollins Publishers::

    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
    Etymology: from Greek akros extreme, topmost



    'acro-' also found in these entries:
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