Lacuna

Wednesday, November 19, 2025
Word of the Day

What is Lacuna?

noun
An unfilled space or gap; a missing portion in a manuscript, argument, or system.

Pronunciation

US pronunciation: /ləˈkuː.nə/
UK pronunciation: /ləˈkjuː.nə/
Slow pronunciation: lah-KOO-nuh

Meaning Explained

Lacuna names what isn’t there — the silence in data, the torn page, the step everyone skipped.

Why This Word?

Chosen to encourage curiosity about missing pieces, not just present ones.

Examples of Use

Here's how this word appears in everyday language:

  • There is a lacuna between theory and practice.
  • Editors noted a lacuna in chapter three.
  • The dataset’s lacunae skew the conclusions.

Word Origins

Latin lacuna “pit, hole, gap,” diminutive of lacus “lake”

Plural is lacunae or lacunas.

First appearance in English: 17th century

Word Family

Related forms of this word:

  • Noun: gap

    A gap in evidence remained.

  • Noun: omission

    An omission weakened the report.

  • Noun: ellipsis

    An ellipsis signaled a lacuna.

Around the World

How this word appears in other languages:

  • Spanish: laguna (hueco)
  • French: lacune
  • German: Lücke
  • Italian: lacuna
  • Portuguese: lacuna

If you Already Know This Word

If you've mastered this word, try these more advanced alternatives:

Hiatus

A break in continuity; lacuna stresses absence.

Void

Total emptiness; lacuna may be bounded/specific.

Deficiency

Lack of needed element; lacuna is a gap in text or logic.

Fun Facts

  • Bone tissue has microscopic “lacunae” that house osteocytes.
  • Scholars sometimes print brackets […] to mark lacunae in texts.

Cultural Usage

  • Classical manuscripts often contain lacunae where text was lost.
  • Legal lacunae require judicial interpretation or new statutes.

Common Mistakes

Not “laguna” (Spanish for lagoon); false friend.

Micro Story

Her survey revealed a lacuna in the historical record.