Degree of freedom

[механика] степень свободы; [робототехника] степень подвижности

Англо-русский политехнический словарь

Degree of freedom

1. any of a limited number of ways in which a body may move or in which a dynamic system may change 2. one of the capabilities of a statistic for variation of which there are as many as the number of unrestricted and independent variables determining its value

Merriam-Webster's Collegiate Dictionary