{protoxide of nitrogen}, laughing gas, now called {hyponitrous oxide}. See under {Laughing}. [1913 Webster]
The Collaborative International Dictionary of English. 2000.
Protoxide — Pro*tox ide, n. [Proto + oxide: cf. F. protoxide.] (Chem.) That one of a series of oxides having the lowest proportion of oxygen. See {Proto }, 2 (b) . [1913 Webster] {protoxide of nitrogen}, laughing gas, now called {hyponitrous oxide}. See… … The Collaborative International Dictionary of English
hyponitrous oxide — Protoxide Pro*tox ide, n. [Proto + oxide: cf. F. protoxide.] (Chem.) That one of a series of oxides having the lowest proportion of oxygen. See {Proto }, 2 (b) . [1913 Webster] {protoxide of nitrogen}, laughing gas, now called {hyponitrous oxide} … The Collaborative International Dictionary of English
nitrous oxide — Laughing gas, protoxide of nitrogen, exhilarating gas, nitrogen monoxide … New dictionary of synonyms
black cap — 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,… … The Collaborative International Dictionary of English
Dacelo gigas — 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,… … The Collaborative International Dictionary of English
giant kingfisher — 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,… … The Collaborative International Dictionary of English
gogobera — 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,… … The Collaborative International Dictionary of English
Herpetotheres cachinnans — 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,… … The Collaborative International Dictionary of English
Larus atricilla — 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,… … The Collaborative International Dictionary of English
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, or… … The Collaborative International Dictionary of English
