| 释义 |
autochthonous, a.|ɔːˈtɒkθənəs|
[f. as prec. + -ous.]
a. = autochthonic.
1805W. Taylor in Ann. Rev. III. 309 If the English have this great predilection for autochthonous bread and butter. 1860Sat. Rev. X. 149/1 Most of them [the Red Indians] believe themselves to be autochthonous. 1879B. Taylor Germ. Lit. 13 A native autochthonous German literature.
b. transf. in Path.; (see quot.)
1876tr. Wagner's Gen. Pathol. 189 An autochthonous or primitive thrombus is one which remains confined in the part in which it first arose, especially in the heart.
c. Geol. [f. G. autochthon (K. W. von Gümbel 1888), see allochthonous a.] Consisting of or formed from indigenous material (opp. allochthonous); applied to organic deposits and rock formations originating in situ.
1900in J. F. Kemp Handbk. Rocks (ed. 2) 126. 1916 C. C. Forsaith in Bot. Gaz. LXII. 33 Autochthonous peat (that type of peat which represents the amassing of successive generations of plants in..constant, but stagnant..water). 1928K. E. Carpenter Life in Inland Waters viii. 207 In place of the ‘autochthonous’ (home-produced) sediments..we have ‘allochthonous’ material of drifted fragments from shore-living plants. 1935E. B. Bailey Tectonic Essays iii. 34 In tectonics, an autochthonous fold is one that is made of untravelled indigenous rocks. 1946Q. Jrnl. Geol. Soc. CI. 207 It is considered that for the most part the Downtonian and Dittonian vertebrate faunas were not autochthonous, but were of freshwater origin. |