Respiratory
Pronunciation : Re*spir"a*to*ry (r*spr"*t*r or rs"p*r-)
Part of Speech : a.
Definition : Defn: Of or pertaining to respiration; serving for respiration; as, the respiratory organs; respiratory nerves; the respiratory function; respiratory changes. Respiratory foods. (Physiol.) See 2d Note under Food, n., 1. -- Respiratory tree (Zo?l.), the branched internal gill of certain holothurians.
(Physiol.)
Source : Webster's Unabridged Dictionary, 1913