—n. 1. a hypodermic syringe or injection.
2. a stimulus or boost.
—v.t. 1. to administer a hypodermic injection to.
2. to stimulate by or as if by administering a hypodermic injection.
3. to increase, boost, or augment: to hypo the car's power by installing a bigger engine.
a prefix appearing in loanwords from Greek, where it meant “under” (hypostasis); on this model used, especially as opposed to hyper-, in the formation of compound words (hypothyroid). Also,esp. before a vowel,hyp-.