Acme/ˈækmi/ Definition 1 of 2Pro Tip 1/3Metaphorical Peak Usually describes the highest achievement, not a physical place. Winning the Nobel Prize was the acme of his scientific endeavors. Pro Tip 2/3Personal Best Often relates to personal achievements or career milestones. Becoming a chef was her acme, surpassing all earlier aspirations. Pro Tip 3/3Figurative Use Can be used more broadly for excellence in any context. This artwork represents the acme of the Renaissance period.