Definition of hypo- in English:

hypo-

Pronunciation: /ˈhʌɪpəʊ/
(also hyp-)

prefix

1Under: hypodermic
1.1Below normal: hypoglycaemia
1.2Slightly: hypomanic
1.3 Chemistry Containing an element with an unusually low valency: hypochlorous

Origin

from Greek hupo 'under'.

Definition of hypo- in:

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Word of the day anomalous
Pronunciation: əˈnɒm(ə)ləs
adjective
deviating from what is standard, normal, or expected