1816 Ann. Philos. 7 70 Dr. Blainville conceives that the cirrhipedes offer no obstacle to this distribution, and that they form what he calls a subtype, intermediate between the mollusca and annulosa.

1862 W. A. Miller Elements Chem. (ed. 2) III. i. §2. 50 The hydrochloric acid type..forms a subtype which comprehends the chlorides, fluorides, bromides, iodides, and cyanides.

1872 D. Oliver Lessons Elem. Bot. (new ed.) ii. 122 In some Natural Orders the amount of variation..is so considerable that we shall find it needful to employ subtypes.

1903 Mod. Med. Sci. 16 164 The various sub-types of paratyphoid bacillus may also be distinguished from one another by agglutination.

1936 J. S. Joffe Pedology 315 Within the broad belt of the forest podzol zone there is a soil subtype known as the ‘brown forest soils’.

1952 Amer. Antiq. 17 353/1 Classification of point types was made on basic outline and directional cut of the notch. Subtypes were determined by the positional appearance of the bilateral notching and the angular degree of the notches to the long axis.

1979 Sci. Amer. Jan. 66/1 That particular subtype of the influenza virus had been the agent of the pandemic of 1918, which killed 20 million people worldwide.

1997 I. Crespi Public Opinion Process v. 97 Totalitarianism is often treated as a subtype of authoritarianism.

2011 N.Y. Times (Nexis) 18 Jan. d1 Because breast cancer is a complex illness that encompasses many subtypes, generalizations are tricky.

1940 R. L. Sutherland & J. L. Woodward Introd. Sociol. (ed. 3) xii. 317 Eubank and Blumer have shown how this general collective form, the crowd, can be subtyped.

1948 Jrnl. Farm Econ. 30 342 When 453 of the livestock farms of central Indiana are sub-typed, approximately half of them are more adequately described as hog farms.

1973 Lancet 20 Oct. 867/1 Relatives of 9 blood-donors were also subtyped; all had the same subtype as the index case to which they were related.

2007 B. J. Sadock et al. Kaplan & Sadock's Synopsis Psychiatry (ed. 10) ix. 300/2 Alzheimer's dementia and dementia caused by a general medical condition are subtyped according to the presence or absence of clinically significant behavioral disturbances.