Webster's Revised Unabridged Dictionary · 1913

Hyperpnoa

Hyperpnoa , noun

[New Latin, from Greek "ype`r over + {not transcribed}, {not transcribed}, breath.]

(Physiology) Abnormal breathing, due to slightly deficient arterialization of the blood; -- in distinction from eupnoa. See Eupnoa, and Dispnoa.

Also: Hyperpnoea