Chem. [f. URAN-IUM + -YL.] A radical (UO2) held to exist in many compounds of uranium.

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1850.  Watts, trans. Gmelin’s Handbk. Chem., IV. 181. Chloride of uranyl. Ibid. (1863), Dict. Chem., I. 797. Carbonate of Uranyl and Ammonium. Ibid. Uranyl, U2O2, is a diatomic radicle which may be supposed to exist in the uranic salts, e.g. uranic nitrate.

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1884.  Frankland & Japp, Inorg. Chem., 708. Salts in which the dyad radical uranyl (UviO2)″ plays the part of a dyad metal.

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  b.  Uranyl chloride, oxide, phosphate, salts: (see quots.).

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1865.  Mansfield, Salts, 285. The so-called ‘Uranyl’ Salts of Peligot, supposed to be of the form U2O2.

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1878.  C. M. Tidy, Handbk. Mod. Chem., 337. Uranic oxide (sesquioxide) or Uranyl oxide.

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1888.  Encycl. Brit., XXIV. 7/2. Solutions of uranyl salts (nitrate, &c.).

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1888.  Cassell’s Encycl. Dict., VII. 384. Uranyl-chloride, Uranic-oxychloride.

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1903.  Amer. Jrnl. Sci., Ser. IV. XVI. 237. The filtering of a precipitate of ammonium uranyl phosphate through a Gooch crucible.

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  Hence Uranylic a. (See -IC 1 b.)

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1884.  Frankland & Japp, Inorg. Chem., 708–11. Uranylic chloride,… bromide,… fluoride,… nitrate,… sulphate,… pyrosulphate,… sulphide.

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