The administration of osmotically active agents such as mannitol or hypertonic saline in order to produce dehydration of tissues, especially in the treatment of cerebral oedema and increased intracranial pressure.

1Treatment or therapy aimed at restoring the sense of smell. rare.

2The use of odours to govern mood and promote well-being; treatment for stress, anxiety, etc., involving such use. [A trademark in the United Kingdom.]