Acme
来自Big Physics
late 16th century: from Greek akmē ‘highest point’. Until the 18th century it was often consciously used as a Greek word and written in Greek letters.
wiktionary
Directly borrowed from Ancient Greek ἀκμή(akmḗ, “ point, high point”).
etymonline
acme (n.)
"highest point," 1560s, from Greek akme "(highest) point, edge; peak of anything," hence "prime (of life, etc.), the best time" (from PIE *ak-ma-, suffixed form of root *ak- "be sharp, rise (out) to a point, pierce"). In English it was written in Greek letters until c. 1620. The U.S. grocery store chain was founded 1891 in Philadelphia, Pennsylvania.
