hyp-

1.
variant of hypo- before a vowel:
hypalgesia.
British Dictionary definitions for hyp-

hyp-

prefix
1.
a variant of hypo- hypabyssal

hypo-

prefix
1.
under, beneath, or below: hypodermic
2.
lower; at a lower point: hypogastrium
3.
less than: hypoploid
4.
(in medicine) denoting a deficiency or an abnormally low level: hypothyroid, hypoglycaemia
5.
incomplete or partial: hypoplasia
6.
indicating that a chemical compound contains an element in a lower oxidation state than usual: hypochlorous acid
Word Origin
from Greek, from hupo under
hyp- in Medicine

hyp- pref.
Variant of hypo-.

hyp- in Science
hypo- or hyp-  
A prefix that means "beneath" or "below," as in hypodermic, below the skin. It also means "less than normal," especially in medical terms like hypoglycemia. In the names of chemical compounds, it means "at the lowest state of oxidation," as in sodium hypochlorite.