The definition of an acme is the apex or highest point of achievement.
(noun)An example of acme would be the top of a mountain.
See acme in Webster's New World College Dictionary
noun
Origin: Gr akmē, a point, top, age of maturity < IE base *a-: see acid
See acme in American Heritage Dictionary 4
noun
Origin:
Origin: Greek akmē; see ak- in Indo-European roots
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