callisthenics

[kal-uh s-then-iks] /ˌkæl əsˈθɛn ɪks/
noun
1.
(used with a singular or plural verb) calisthenics.
Related forms
callisthenic, adjective
British Dictionary definitions for callisthenics

callisthenics

/ˌkælɪsˈθɛnɪks/
noun
1.
(functioning as pl) light exercises designed to promote general fitness, develop muscle tone, etc
2.
(functioning as sing) the practice of callisthenic exercises
Derived Forms
callisthenic, calisthenic, adjective
Word Origin
C19: from calli- + Greek sthenos strength