hypo-, hyp-

(Greek: under, below, beneath; less than; too little; deficient, diminished; used as a prefix)

hypopepsinia
hypophalangia, hypophalangism, hypophalangy
The congenital absence of one or more digital phalanges.
hypophilia
In psychiatry, an inexact, pseudoscientific term referring to a state of having reduced or inadequate sexual responsiveness.
hypophobia (s) (noun) (no plural)
A lack of normal fear: Tom's mother thought that her son must have a hypophobia, because he never seemed to be afraid of anything, not even with bungee jumping!
hypophonesis
In percussion or auscultation, a sound that is diminished or fainter than usual.
hypophonia
An abnormally weak voice due to incoordination of the muscles concerned in vocalization.
hypophoria
A tendency of the visual axis of one eye to deviate downward, prevented by binocular vision.
hypophotesthesia (s) (noun), hypophotesthesias (pl)
A decreased sensitivity to light: Despite developing hypophotesthesia, Daniel’s ophthalmologist recommended he wear sunglasses when going outside in the sun.
hypophrasia
Slowness or lack of speech associated with a psychosis or brain injury.
hypophyllic
A reference to something growing on the lower surfaces of leaves.
hypophyllous
Growing under or on the lower surfaces of leaves.
hypophysis (s), hypophyses (pl)
1. An undergrowth.
2. The pituitary body or gland.
hypophytogenous
Developing or growing on the lower (under) surfaces of the leaves of plants.
hypoplankton
Plankton found in the layer of water directly above the bottom of the ocean.
hypoplasia