hy·pop·ne·a 
(hī-pŏpnē-ə, hī′pō-nēə)
(hī-pŏpnē-ə, hī′pō-nēə)n.
Abnormally slow, shallow breathing.
[HYPO- + Greek pnoiā, -pnoia, breath, breathing (from pnein, to breathe; see pneu- in the Appendix of Indo-European roots).]
hy′pop·neic adj.