(v) :
to change state from a solid to a gas (or from a gas to a solid) without passing through the liquid state (transitive or intransitive); to purify or refine a substance through such a change of state
(v) :
to change state from a solid to a gas (or from a gas to a solid) without passing through the liquid state (transitive or intransitive); to purify or refine a substance through such a change of state