protoxide of nitrogen
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 under {Laughing}. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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  • 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

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