1683 W. Salmon Doron Medicum i. 339 Stratifying, is to lay stratum super stratum, layer upon layer.

1706 Phillips's New World of Words (new ed.) Stratification, (in Chymistry) a stratifying or putting different Matters Bed upon Bed [etc.].

1852 H. Falconer Rep. Teak Forests Tenasserim Provinces Sel. Rec. Bengal Govt. 233 The stratifying or heating of the seed previously to sowing it.

1870 T. K. Beecher Our Seven Churches vii. 137 A man does well not to run a tilt against the inexorable stratifyings of society.

1963 New Scientist 27 June 723 It is possible to account for the attenuation within the region of sensitivity and to correct temperature measurements with an ‘optical thickness’ factor that depends upon the specific humidity, the pressure, and the stratifying of the atmosphere.

2012 N. A. Schmidt & J. M. Brown Evid.-based Pract. for Nurses (ed. 2) x. 255 Stratifying can also decrease data collection time and costs of collecting data.

1849 Farmer's Mag. Aug. 153/1 Over that they would see a stratifying mass of sand shells, commonly called crag.

1891 Engin. News-Record 26 Dec. 620/3 The chief point of novelty consists in the use of a ‘stratifying magnet’ over which the material passes before reaching the separating magnet.

1913 Official Gaz. (U.S. Patent 1,055,737) 399/1 In a stratifying separator, a draw-off comprising a tube vertically adjustable within a cylinder having a slot, open to the separator.

1978 E. Anderson Place on Corner vii. 214 The power of peer-group censorship appears to be a chief stratifying agent... Group members therefore seek out others they feel will be unable or unwilling to remind them of their shortcomings.

2007 D. S. Elliott Measuring your Library's Value v. 62 In making decisions about which stratifying variables to employ in the sampling procedures and in what degree of detail, they face a trade-off.