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Any one of the many complex derivatives of urea; thus, hydantoin, and, in an extended dense, guanidine, caffeine, et., are ureides. [Written also ureid.]

composed of carbon, hydrogen, nitrogen, and oxygen, C5H4N4O3, and by decomposition yields urea, among other products. It can be made synthetically by heating together urea and glycocoll. It was formerly called also lithic acid, in allusion to its occurrence in stone, or calculus.

The Bureau Veritas. See under Bureau.

can water thrush. See Water thrush. -- Wood wagtail, an Asiatic wagtail; (Calobates sulphurea) having a slender bill and short legs.

of a family of plants having pitcher-shaped leaves. The sidesaddle flower (Sarracenia purpurea) is the type.

. -- Weather breeder, a fine day which is supposed to presage foul weather. -- Weather bureau, a popular name for the signal service. See Signal service, under Signal, a. [U.S.] -- Weather cloth (Naut.), a long piece of canvas of tarpaulin used to preserve the hammocks from injury by the weather when stowed in the ne…

ignal giving information about the weather. The system used by the United States Weather Bureau includes temperature, cold or hot wave, rain or snow, wind direction, storm, and hurricane signals.

orce are dangerous to shipping, etc. The wind-signal system of the United States Weather Bureau consists of storm, information, hurricane, hot wind, and inland storm signals.

A complex nitrogenous substance related to urea and uric acid, produced as a white powder; -- so called because it forms yellow salts, and because its solution forms a blue fluorescence like quinine.