< /ləˈkyu ni/, la·cu·nas.

  1. a gap or missing part, as in a manuscript, series, or logical argument; hiatus.
  2. Anatomy. one of the numerous minute cavities in the substance of bone, supposed to contain nucleate cells.
  3. Botany. an air space in the cellular tissue of plants.

noun plural -nae (-niː) or -nas

  1. a gap or space, esp in a book or manuscript
  2. biology a cavity or depression, such as any of the spaces in the matrix of bone
  3. another name for coffer (def. 3)

plural of lacuna (q.v.). n.“blank or missing portion in a manuscript,” 1660s, from Latin lacuna “hole, pit,” diminutive of lacus “pond, lake” (see lake (n.1)). The Latin plural is lacunae. Related: Lacunal; lacunar; lacunose. n. pl. la•cu•nas

  1. An anatomical cavity, space, or depression, especially in a bone.
  2. An empty space or a missing part; a gap; a defect.
  3. An abnormal space between the strata or between the cellular elements of the epidermis.
  4. corneal space
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