a. [f. LACUNA + -AL.] Of or pertaining to a lacuna, resembling a lacuna.
1846. Dana, Zooph., iv. (1848), 58. The intermediate lateral pores or lacunal spaces.
1859. J. Tomes, Dental Surg., 86. A bone lacuna, situated within a semi-circular indentation in the dentine, gives the appearance of a lacunal cell.
1874. Van Buren, Dis. Genit. Org., 77. Another form of lacunal inflammation is where the lacuna magna in the roof of the urethra continues inflamed.
