How Do You Spell CALISTHENICSES?
Pronunciation: [kˈalɪsθənˌɪksɪz] (IPA) 
Calisthenicses is a plural form of the word calisthenics. It is spelled [kælɪsˈθɛnɪksɪz] in IPA phonetic transcription. The word originates from Greek kállos "beauty" and sthénos "strength" and refers to physical exercises that develop strength, flexibility, and coordination. The spelling of such a long word as "calisthenicses" may seem tricky, but it follows the general rule of adding -es to form the plural of words ending in -ics, as in "mathematics" – "mathematicses."
