Mechanical practice or performance; regular procedure; routine.

A regularly followed procedure; a routine. Obsolete.

As a mass noun: regular, unvarying, or mechanical performance of actions or duties; established or prescribed practice or conduct.

the quality or state of being habitual, habitualness; in quot. 1858, the state of being fixed in old habits.

The quality or fact of doing something automatically, mechanically, or unthinkingly, esp. through habit or convention; the result of this…

Machine-like procedure; routine. rare.

figurative. Automatic or mechanical action, behaviour, or routine. Chiefly in on autopilot: (acting or happening) according to routine or habit…