endogenousadj.

1830 J. Lindley Introd. Nat. Syst. Bot. Introd. 20 Palms, which are endogenous in the strictest sense of the word.

1856 R. W. Emerson Eng. Traits xiii. 226 No chemist has prospered in the attempt to crystallize a religion. It is endogenous, like the skin.

1874 J. Lubbock Wild Flowers iii. 48 Endogenous plants..are those in which the bud is developed from a sheath-like cavity on one side of the cotyledon.

1876 J. Van Duyn & E. C. Seguin tr. E. L. Wagner Man. Gen. Pathol. 250 Oser also holds to the endogenous formation of cells.

1845 tr. A. von Humboldt Κοσμος I. 452 I entitled (1832) the plutonic and volcanic eruptive rocks endogenous (that which is engendered in the interior,) the sedimentary and flœtz rocks exogenous, (externally engendered).

1859 D. Page Handbk. Geol. Terms 159 Endogenites, fossil stems and fragments exhibiting the endogenous structure are so termed.

1878 T. S. Hunt Chem. & Geol. Ess. (ed. 2) xi. 196 The endogenous character of this granite is well shown by its banded structure.

1890 Bull. Geol. Soc. Amer. 1 48 The growth of the continent, so far as through marine waters, may be said to have been endogenous. It began to be exogenous on the Atlantic side in the Cretaceous era.

1954 W. D. Thornbury Princ. Geomorphol. xix. 488 Volcanism arises from forces which are endogenous in nature and are produced by physical and chemical changes taking place in the earth's interior.

1925 G. V. T. Hamilton Introd. Object. Psychopathol. ix. 283 Conjointly acting exogenous and endogenous stimuli..may..lead to seriously morbid habits of indirect reaction.

1962 Lancet 29 Dec. 1341/1 Genetic factors are known to be important in the ætiology of so-called endogenous depressions, the predisposition being inherited, and the depressive illness often being precipitated by other factors which may be physical or exogenous.