hy·po·ven·ti·la·tion 
(hī′pə-vĕn′tl-āshən)
(hī′pə-vĕn′tl-āshən)n.
Reduced or deficient ventilation of the lungs, resulting in reduced aeration of blood in the lungs and an increased level of carbon dioxide in the blood.
- progressive
- progressive education
- progressively
- progressiveness
- Progressive Party
- progressivism
- progressivist
- progressivistic
- progressivity
- proguanil
- prohibit
- prohibition
- prohibitionism
- prohibitionist
- Prohibition Party
- prohibitive
- prohibitively
- prohibitiveness
- prohibitory
- prohormone
- proinsulin
- project
- projectable
- projectile
- projection