eupnea
noun
eup·nea yüp-ˈnē-ə 
variants or less commonly eupnoea
: normal respiration
eupneic
yüp-ˈnē-ik
adjective 
Word History
Etymology
New Latin, from Greek eupnoia, from eupnous breathing freely, from eu- + pnein to breathe — more at sneeze
First Known Use
circa 1706, in the meaning defined above
Medical Definition
eupnea
noun
eup·nea
variants or chiefly British eupnoea
yu̇p-ˈnē-ə
: normal respiration compare dyspnea