phosphaticadj.

1818 H. Davy in Philos. Trans. (Royal Soc.) 108 331 M. Dulong imagines that the acid formed by the slow combustion of phosphorus in the air, and which I have supposed to be a mixture of phosphorus [sic] and phosphoric acids, is a peculiar acid, a chemical compound of phosphorous and phosphoric acids, which he names phosphatic acid.

1847–9 Todd's Cycl. Anat. & Physiol. IV. i. 83/2 The tonsils are not unfrequently the seat of phosphatic deposit.

1874 Nature 24 Sept. 431/1 A phosphatic glass..achromatised by a glass of terborate of lead.

1940 F. F. Grout Kemp's Handbk. Rocks (ed. 6) viii. 174 Phosphatic shells mixed in with carbonate shells produce phosphatic limestones, but they are distinguished only by testing.

1993 New Scientist 25 Sept. 35/1 The soil of some courses could be legally sold as phosphatic fertiliser.

2000 H. Gee Deep Time ii. 68 Conodonts are hard and phosphatic, and routinely preserved in great numbers.

1846 Philos. Trans. (Royal Soc.) 136 137 The acid liquid called phosphatic acid, produced during the action of phosphorus upon moist atmospheric air, enjoys likewise the property of destroying indigo.

1951 Dict. Gardening (Royal Hort. Soc.) II. 1011/1 Horse-dung..shows its value as a source of nitrogen (of which the mixed solid and liquid excrement mixed with the litter used in the stable contains about 0·7 per cent., phosphatic acid about 0·3 per cent.).

1966 Jrnl. Insect Physiol. 12 237 The following manner of lipid mobilization and decomposition may be possible in the insect: triglyceride → diglyceride → phosphatic acid (Ger. Phosphatidsäure).

1999 Internat. Jrnl. Pharmaceutics 184 56/2 Phospholipon 90 contains..further minor components such as fatty acids, cephalin and phosphatic acid.

1821 W. Prout Inq. Nature & Treatm. Gravel v. 175 The first circumstances in the condition of the urine which generally denote a change from the lithic to the phosphatic diathesis, are the general paleness of its colour, and sometimes its increased quantity.

1843 R. J. Graves Syst. Clin. Med. iv. 50 Certain derangements of the urinary functions, such as the phosphatic and lithic diatheses.

1873 J. J. Moorman Mineral Springs N. Amer. 253 He regards it as worthy of a trial in the phosphatic diathesis, in colica pictonum, and asthma.

1860 N. Amer. Rev. Apr. 485 It is thought that phosphatic nodules and bituminous matter have been discovered.

1910 J. A. Murray Soils & Manures viii. 213 Quantities of phosphatic nodules are also found in the Suffolk Crag and in various parts of the Green Sand.

1995 Philos. Trans. (Royal Soc.) B. 347 306/2 A small number of isolated sclerites, recovered from phosphatic nodules in the ‘Green Shales’.