ETYM Late Lat. sublimatio: cf. French sublimation.
In chemistry, the conversion of a solid to vapor without passing through the liquid phase.
Some substances that do not sublime at atmospheric pressure can be made to do so at low pressures. This is the principle of freeze-drying, during which ice sublimes at low pressure.
1. (Chemistry) A change directly from the solid to the gaseous state without becoming liquid.
2. (Psychology) Modifying the natural expression of an impulse or instinct (especially a sexual one) to one that is socially acceptable.