Dictionary.com

lacuna

[ luh-kyoo-nuh ]
/ ləˈkyu nə /
Save This Word!

noun, plural la·cu·nae [luh-kyoo-nee], /ləˈkyu ni/, la·cu·nas.

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

QUIZZES

QUIZ YOURSELF ON “ITS” VS. “IT’S”!

Apostrophes can be tricky; prove you know the difference between it’s and its in this crafty quiz!
Question 1 of 12
On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.

Origin of lacuna

First recorded in 1655–65; from Latin lacūna “ditch, pit, hole, gap, deficiency,” akin to lacus “basin, tub, vat, lake”; see lake1. Cf. lagoon
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for lacuna

lacuna
/ (ləˈkjuːnə) /

noun plural -nae (-niː) or -nas

a gap or space, esp in a book or manuscript
biology a cavity or depression, such as any of the spaces in the matrix of bone
another name for coffer (def. 3)
lacunose, lacunal or lacunary, adjectivelacunosity (ˌlækjʊˈnɒsɪtɪ), noun
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

Medical definitions for lacuna

lacuna
[ lə-kyōōnə ]

n. pl. la•cu•nas

An anatomical cavity, space, or depression, especially in a bone.
An empty space or a missing part; a gap; a defect.
An abnormal space between the strata or between the cellular elements of the epidermis.
corneal space
la•cunal adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Get Online Help For Kids!