Definitions

1. noun

the highest or most superior point or state; the culmination or climax of something

“The acme of her career was when she received the award for her outstanding performance.”

2. noun

a device or appliance that is the ultimate or most advanced of its kind; a peak or high point of development

“The new smartphone is the acme of modern technology.”

3. noun

the highest part of a cone or pyramid

“The acme of the volcanic cone was still smoldering with volcanic ash.”