autogenousadj.

1826 Inspector & Lit. Rev. 1 231 Streets spring up here..with so little apparent assistance that one would be inclined to say, in Jeremy Bentham's phraseology, that they were autogenous.

1861 F. Galton Vacation Tourists & Trav. 1860 426 Let us hope that a united Italy may develop..an autogenous form of social life.

1904 Mind 13 33 There is..but one sense in which will could be really ‘autogenous’.

1994 I. Shimada Pampa Grande & Mochica Culture i. 9/1 Many of their..symbolic features and achievements were impressive, autogenous, and unprecedented in the Andes.

1840 Mechanics' Mag. 25 Apr. 546/1 ‘Autogenous soldering’ is the term given by its inventor to a new method of joining one piece of metal to another.

1879 E. Spon Workshop Receipts 367/1 Autogenous Soldering, or burning together.

1930 Engineering 7 Feb. 163/2 The oxygen is chiefly required..for autogenous welding.

1957 Welding, Brazing & Soldering of Wiggin Nickel Alloys (H. Wiggin & Co. Ltd.) 41 Autogenous welds..are often required and can be made in high-nickel alloys.

2002 G. Mathers Welding of Aluminium vi. 115 Short arc lengths are necessary when autogenic welding, typically 0.8-1.5mm.

1840 R. Owen in Rep. Brit. Assoc. 1839 Rep. State Sci. 46 The parts or processes of such a vertebra may be divided into autogenous, or those which are independently developed in separate cartilages, and exogenous, or those which shoot out as continuations from these independent constituents.

1847 R. Owen in Rep. Brit. Assoc. 1846 250 The names printed in roman type signify those parts which, being usually developed from distinct and independent centres, I have termed ‘autogenous’ elements.

1870 G. Rolleston Forms Animal Life 34 Its neurapophyses neither anchylose with each other above, nor with any other autogenous vertebral element.

1901 Proc. Linn. Soc. New S. Wales 25 738 In most marsupials the upper caudal vertebræ have well developed autogenous transverse processes.

1937 E. Ford in Jrnl. Marine Biol. Assoc. U.K. 22 3 Mention may also be made of the frequent use of the term autogenous as a convenient way of referring to neural and haemal arches which are closely applied to, but definitely not fused with, the vertebral centrum.

1970 Proc. Acad. Nat. Sci. Philadelphia 122 4 The haemal spine of the second preural centrum (penultimate) is always autogenous, although often extensively sutured to its centrum.

2004 Jrnl. Vertebr. Paleontol. 24 806/1 All the hemal and neural arches are autogenous.

1851 J. Paget in London Med. Gaz. 6 June 988/2 It might, on some grounds, be desirable to classify the cysts according to their respective modes of formation; separating, the ‘secondary cysts’, as those have been called which are derived by growth or expansion of normal parts, from the ‘primary’, or, as they might be called, the ‘autogenous’ cysts.

1876 T. Bryant Pract. Surg. (ed. 2) I. iii. 101 Capable of secreting their own contents..autogenous cysts, as Paget calls them.

1922 Ann. Ophthalmol. 25 613 Dr. Suker called it an autogenous implantation cyst of the iris, caused by proliferation of growth of the iris.

1929 Trop. Dis. Bull. 26 808 When the winter is past the ‘autogenous’ female stock resumes the ordinary blood-sucking habits.

1966 Bull. Entomol. Res. 57 12 It seems very likely that insects caught attempting to feed were originally autogenous individuals, which, having deposited the first egg-batch, were attempting to obtain blood for the first time.

1975 Biol. Bull. 149 386 Inadequate larval and adult nutrition reduces or eliminates autogenous egg production.

2001 A. Spielman & M. D'Antonio Mosquito 198 Those that could reproduce without blood were obviously autogenous. Typically they produced about eighty viable eggs.

1851 Philos. Trans. (Royal Soc.) 141 756 Ichthyosaurus derives additional strength and fixation from hypapophyses autogenously developed..at the inferior interspace between occiput and atlas.

1865 Jrnl. Soc. Arts 30 June 541/2 It is made of pure platinum, autogenously soldered.

1989 J. G. Kerr et al. in R. N. Swamy & B. Barr Fibre Reinforced Cements & Concretes 600 Cracks heal autogenously with time and this may prevent further visible evidence of moisture penetration.

2000 M. N. Alekshun & S. B. Levy in G. Storz & R. Hengge-Aronis Bacterial Stress Responses xxii. 352/1 QacR does not autogenously regulate its own expression.