See more synonyms for lacuna on
noun, plural la·cu·nae [luh-kyoo-nee] /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.

Origin of lacuna

1655–65; < Latin lacūna ditch, pit, hole, gap, deficiency, akin to lacus vat, lake1. Cf. lagoon Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for lacuna

interval, opening, cavity, space, hiatus, gap, break, interim, depression

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British Dictionary definitions for lacuna


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)
Derived Formslacunose, lacunal or lacunary, adjectivelacunosity (ˌlækjʊˈnɒsɪtɪ), noun

Word Origin for lacuna

C17: from Latin lacūna pool, cavity, from lacus lake
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for lacuna

"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.

Online Etymology Dictionary, © 2010 Douglas Harper

lacuna in Medicine


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
Related formsla•cunal adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.