a. [f. as if L. *lacustri- (f. lacus LAKE sb.4, after the analogy of palūstri-, palūster, f. palūd-, palūs marsh) + -INE.] Of or pertaining to a lake or lakes. Said esp. of plants and animals inhabiting lakes, and Geol. of strata, etc., which originated by deposition at the bottom of lakes; also with reference to ‘lake-dwellings’ such as those of prehistoric Europe. Lacustrine age, period: the period when lake-dwellings were common.

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1830.  Lyell, Princ. Geol., I. iii. 49. The lacustrine and alluvial deposits of Italy. Ibid. (1833), III. 220. I collected six species of lacustrine shells.

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1843.  Portlock, Geol., 165. The clays and sands … on Lough Neagh … were of lacustrine origin.

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1850.  H. Miller, Footpr. Creat., i. (1874), 9. Lacustrine plants.

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1851.  D. Wilson, Preh. Ann. (1863), I. i. 38. The lacustrine habitations of Switzerland.

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1868.  Peard, Water-Farm., iii. 30. The stream we design to cultivate must possess no lacustrine head.

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1869.  Lubbock, Preh. Times, ix. (ed. 2), 291. The bones generally occur in the lacustrine shell marl.

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1875.  Emerson, Lett. & Soc. Aims, Prog. Cult., Wks. (Bohn), III. 225. Who would live in the stone age … or the lacustrine?

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1878.  Huxley, Physiogr., 143. Lacustrine Delta. The alluvial tract formed by a river at its embouchure into a lake.

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1879.  Rutley, Study Rocks, iii. 15. Identified with a marine or a lacustrine fauna.

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1880.  Harting, Brit. Anim. Extinct, 3. Wild boars … wallowing … in lacustrine mire.

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