a. [f. ESTUARY or L. æstuāri-um, after analogy of mar-ine, lacustr-ine: see -INE.] Of or belonging to an estuary; esp. of strata, etc., formed or deposited in an estuary.
1849. Murchison, Siluria, xii. 297. The lowest estuarine zone of Scotland.
1858. Geikie, Hist. Boulder, x. 193. The remains of … estuarine … organisms.
1880. A. R. Wallace, Isl. Life, vi. 102. Clearly marked shore and estuarine deposits.
