hypo

under, below, deficient

Spelled hypo · hypo 'under, beneath'

Greek hypo, under: a hypodermic needle goes beneath skin, hypothermia drops below normal heat; hyper is its over opposite.

Words built from it

hypothesis — a proposed explanation that can be tested
hypo- (under) + thesis (placing)
hypodermic — relating to the area beneath the skin
hypo- (under) + derm (skin) + -ic (relating to)
hypothermia — a dangerously low body temperature
hypo- (below normal) + therm (heat) + -ia (condition)
hypotenuse — the side opposite the right angle in a right triangle
hypo- (under) + tein (stretch), from Greek hypoteinousa, 'stretching under'
hypochondria — persistent anxiety about having a serious illness
hypo- (under) + chondr (rib cartilage) + -ia (condition)