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Definition of Lacuna
1. Noun. A blank gap or missing part.
2. Noun. An ornamental sunken panel in a ceiling or dome.
Definition of Lacuna
1. n. A small opening; a small pit or depression; a small blank space; a gap or vacancy; a hiatus.
Definition of Lacuna
1. an empty space or missing part [n -NAE or -NAS] : LACUNAL, LACUNARY, LACUNATE [adj]
Medical Definition of Lacuna
1. Small cavity or depression, for example: the space in bone where an osteoblast is found. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)