protoxide+of+nitrogen
21Sceloglaux albifacies — Laughing Laugh ing, a. & n. from {Laugh}, v. i. [1913 Webster] {Laughing falcon} (Zo[ o]l.), a South American hawk ({Herpetotheres cachinnans}); so called from its notes, which resemble a shrill laugh. {Laughing gas} (Chem.), hyponitrous oxide,… …
22sea crow — Laughing Laugh ing, a. & n. from {Laugh}, v. i. [1913 Webster] {Laughing falcon} (Zo[ o]l.), a South American hawk ({Herpetotheres cachinnans}); so called from its notes, which resemble a shrill laugh. {Laughing gas} (Chem.), hyponitrous oxide,… …
23Xema ridibundus — Laughing Laugh ing, a. & n. from {Laugh}, v. i. [1913 Webster] {Laughing falcon} (Zo[ o]l.), a South American hawk ({Herpetotheres cachinnans}); so called from its notes, which resemble a shrill laugh. {Laughing gas} (Chem.), hyponitrous oxide,… …
24Physical Insensibility — (Roget s Thesaurus) < N PARAG:Physical Insensibility >N GRP: N 1 Sgm: N 1 insensibility insensibility physical insensibility Sgm: N 1 obtuseness obtuseness &c. >Adj. Sgm: N 1 palsy palsy paralysis paraesthesia anaesthesia Sgm: N 1 sle …
25exhilarating-gas — n. Nitrous oxide, protoxide of nitrogen, laughing gas …
26laughing-gas — n. Nitrous oxide, protoxide of nitrogen, exhilarating gas …
27John Dalton — For other people named John Dalton, see John Dalton (disambiguation). John Dalton …