]iks, ]ēks noun plural but singular in construction
also cin·e·mat·ics ˈsin-
Etymology: modification (influenced by Greek kinēmat-, kinēma motion) of French cinématique, from Greek kinēmat-, kinēma + French -ique -ics — more at cinematograph
: a branch of dynamics that deals with aspects of motion (as acceleration and velocity) apart from considerations of mass and force