RESPIRATORY
respiratory
(adjective) pertaining to respiration; “respiratory assistance”
Source: WordNet® 3.1
Etymology
Adjective
respiratory (not comparable)
Relating to respiration; breathing.
Source: Wiktionary
Re*spir"a*to*ry (r*spr"*t*r or rs"p*r-), a. (Physiol.)
Definition: 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 (Zoöl.), the branched internal gill of certain
holothurians.
Source: Webster’s Unabridged Dictionary 1913 Edition