Stadium acmes is a term used to describe the peak or pinnacle of a stadium. The spelling of this word can be explained using the International Phonetic Alphabet (IPA) transcription. The first part, "stadium," is pronounced /ˈsteɪdiəm/ with the stress on the first syllable. The second part, "acmes," is pronounced /ˈækmiːz/ with the stress on the second syllable. The plural of acme is acmes, hence the spelling of stadium acmes. This term is commonly used in sports-related contexts when referring to the highest point or best performance of a stadium.
The acme or height of a disease.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.