a. [ad. L. lacūnōs-us, f. lacūna LACUNA.] Abounding in lacunæ: a. Having many cavities or depressions; furrowed, pitted; spec. in Nat. Hist.
1816. T. Brown, Elem. Conchol., 155. Lacunose, having the surface covered with small pits.
1826. Kirby & Sp., Entomol., IV. 270. Lacunose (lacunosa), having a few scattered, irregular, broadish but shallow excavations.
1874. Cooke, Fungi, 56. These latter have either a smooth, warted, spinulose, or lacunose epispore.
b. Of a manuscript: Full of gaps or hiatuses.
1894. R. Ellis, Fables of Phaedrus, 9. The lacunose condition of both MSS. at this part of Book iv.
¶ In combining form lacunoso-: lacunoso-fistulose a. Bot., having lacunæ and fistulæ; lacunoso-rugose a. Bot., wrinkled with irregular furrows.
1866. Treas. Bot., 655/2. Lacunoso-rugose, marked by deep broad irregular wrinkles, as the shell of the walnut, or stone of the peach.
1887. W. Phillips, Brit. Discomycetes, 13. Ribs slender, solid, not lacunoso-fistulose, as in the preceding.
Hence Lacunosity, lacunose quality.
1895. Athenæum, 31 Aug., 290/2. The vocabulary conveys a general impression of lacunosity and inconsistency.