a type of screw thread having inclined flat flanks and a flat top and bottom: used in machine tools
a school of early 20th-century Russian poetry whose practitioners were strongly opposed to the vagueness of symbolism and strove for absolute clarity of expression through precise, concrete imagery.
acmha American College of Mental Health Administration
acmhs Asian Community Mental Health Services
the highest point; summit; peak: The empire was at the acme of its power. noun the culminating point, as of achievement or excellence; summit; peak n. “highest point,” 1560s, from Greek akme “(highest) point, edge; peak of anything,” from PIE root *ak- “sharp” (see acrid). Written in Greek letters until c.1620. The U.S. grocery store […]
a rare pyroxene mineral, sodium-ferric iron silicate, NaFe(Si 2 O 6), found in feldspathoid rocks.