Lacuna La*cu"na (l[.a]*k[=u]"n[.a]), n.; pl. L. {Lacun[ae]} (l[.a]*k[=u]"n[ae]); E. {Lacunas} (l[.a]*k[=u]"n[.a]z). [L., ditch, pit, lake, orig., anything hollow. See {Lagoon}.] 1. A small opening; a small pit or depression; a small blank space; a gap or vacancy; a hiatus. [1913 Webster]

2. (Biol.) A small opening; a small depression or cavity; a space, as a vacant space between the cells of plants, or one of the spaces left among the tissues of the lower animals, which serve in place of vessels for the circulation of the body fluids, or the cavity or sac, usually of very small size, in a mucous membrane. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Lacūnae — (lat.), 1) Vertiefungen, Gruben, Lücken; 2) Lücken, Zwischenräume in Pflanzentheilen, welche durch Zerreißung des Zellgewebes entstehen …   Pierer's Universal-Lexikon

  • lacunae — plural of LACUNA (Cf. lacuna) (q.v.) …   Etymology dictionary

  • lacunae — la·cu·nae (lə kuґne) [L.] genitive and plural of lacuna …   Medical dictionary

  • lacunae — la·cu·na || lÉ™ kjuːnÉ™ n. missing piece, empty space, gap; cavity, depression, small opening (Anatomy) …   English contemporary dictionary

  • LACUNAE — …   Useful english dictionary

  • Lacunae of Morgagni — Lacunae of Morgagni, also called the urethral lacunae of the male urethra ( lacunae urethralis , urethrae masculinae or the crypts of Morgagni ), are small depressions or recesses on the surface of the mucous membrane of the urethra. Their… …   Wikipedia

  • lacunae of Morgagni — lacunae urethrales urethrae masculinae …   Medical dictionary

  • lacunae of urethra — urethral lacunae see lacunae urethrales urethrae femininae and lacunae urethrales urethrae masculinae …   Medical dictionary

  • lacunae urethrales urethrae masculinae — [TA] urethral lacunae of male urethra: small depressions or pits in the mucous membrane of the urethra, with their openings usually directed distally; some are openings of ducts of the urethral glands. The largest one, at the distal end, is the… …   Medical dictionary

  • lacunae laterales — [TA] lateral lacunae: venous meshworks within the dura mater on either side of, and continuous with, the superior sagittal sinus; arachnoidal granulations project into them. Called also parasinusoidal lacunae, parasinoidal sinuses, or spaces …   Medical dictionary

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