RhymeZone: microdose definitions

Definitions of microdose:

noun: (medicine) A very low dose (especially of radiation therapy).
verb: (transitive) To administer a very low dose to.
verb: (transitive) To prepare (medicines, etc.) at very low dosages.
verb: To recreationally take small amounts of psychedelic drugs in the belief that it will aid productivity.

(Definitions from Wiktionary)