cold soak

The effect of exposing equipment to low temperatures for an extended period of time.

Cold soak of engines necessitates preheating before their use, as lubricants have thickened, metal has become brittle, and tolerances have diminished.
Arctic, Desert, Tropic Information Center (ADTIC) Research Studies Institute 1955. Glossary of Arctic and Subarctic Terms. ADTIC Pub. A-105, Maxwell AFB, AL, . 90 pp.

Any function of time f(t) is periodic with period t if f(t) = f(t + τ) for all times t, where τ is the smallest number for which this equality holds.

The effect of exposing equipment to low temperatures for an extended period of time.

A region where precipitation is insufficient to support any except xerophilous (drought resistant) vegetation; a region of extreme aridity.