kinesics
noun
ki·ne·sics kə-ˈnē-siks 
kī-,
-ziks
plural in form but singular in construction
: a systematic study of the relationship between nonlinguistic body motions (such as blushes, shrugs, or eye movement) and communication
Did you know?
Anthropologists began to take serious interest in nonverbal communication through gestures, postures, and facial expressions in the 1940s. It is believed, however, that the publication of Ray Birdwhistell’s 1952 book Introduction to Kinesics marked the beginning of formal research into what we know familiarly as "body language." Over 50 years later, the results of kinesics are deeply entrenched in our culture, giving us a whole new language with which to interpret everyday encounters and interaction.
Example Sentences
Recent Examples on the Web March’s program will also educate the viewer about the benefits of kinesics (body movement in nonverbal communication), proxemics (proper body spacing in communication), and haptics (the study of touching in nonverbal communication). 
Hank Beckman, chicagotribune.com, 28 Feb. 2022
Hank Beckman, chicagotribune.com, 28 Feb. 2022 Word History
Etymology
Greek kinēsis motion + English -ics
First Known Use
1952, in the meaning defined above