[ad. L. umbilīcāt-us, f. umbilīcus UMBILICUS. Cf. It. umbilicato, ombelicato, F. ombiliqué.] Resembling a navel; having a depression like the navel.
1698. W. King, trans. Sorbière’s Journ. Lond., 15. He has several other Curiosities; among the rest was a Roman Glass, whose very bottom was smoth and very little umbilicate.
1785. Martyn, Lett. Bot., xxxii. (1794), 499. Umbilicate [section], or hollowed like the navel, and sooty, or appearing black, or as if burnt.
1826. Kirby & Sp., Entomol., IV. 270. Umbilicate,… when a variole, tubercle granule, &c. has a depression in its centre.
1842. Johnston in Proc. Berw. Nat. Club, II. 30. There is no spire, nor is the apex umbilicate.
1897. W. E. Steele, Field Bot., 81. Cal[yx] with 30 furrows, conical, umbilicate at base.
