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Noun: lacuna (lacunae,lacunas)  lu'k(y)oo-nu
  1. A blank gap or missing part
    "The manuscript had several lacunae that made interpretation challenging";
    - blank
     
  2. (anatomy) a small cavity, pit, or discontinuity in bone or other tissue
    "The microscope revealed several lacunae in the bone tissue"

Derived forms: lacunas, lacunae

Type of: crack, gap

Encyclopedia: Lacuna