Definition of hypo- in English:

hypo-

(also hyp-)

prefix

  • 1Under.

    ‘hypodermic’
    1. 1.1 Below normal.
      ‘hypoglycaemia’
    2. 1.2 Slightly.
      ‘hypomanic’
    3. 1.3Chemistry Containing an element with an unusually low valency.
      ‘hypochlorous’

Origin

From Greek hupo ‘under’.

Pronunciation

hypo-

/ˈhʌɪpəʊ/