An Etymological Dictionary of Astronomy and Astrophysics
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Relating to a constraint or system that does not contain time explicitly. For example, a pendulum with an inextensible string of length l₀ is described by the equation: x² + y² = l₀² is both → holonomic and scleronomous.

From Gk. sclero-, from skleros "hard" + -nomous, → -nomy.

Saxtdâtik, from saxt, → hard, + dâtik, → -nomy.