a. [f. prec. + -ARY: in mod.F. concrétionnaire.] Geol. Of the nature of or constituting a concretion; consisting of, containing, or characterized by, concretions.
1830. Lyell, Princ. Geol., I. 205. The concretionary forms of … magnesian limestone. Ibid. (1833), III. 206. Concretionary nodules.
1842. H. Miller, O. R. Sandst., ix. (ed. 2), 206. A concretionary structure.
1854. Hooker, Himal. Jrnls., I. i. 12. A nodular concretionary deposit.
