Search Dictionary
Definition of spacer

spacer

/ˈspeɪ.sɚ/
spa · cer
Plural:spacers
JUMP TO:

spacer Lexical Profile

spacer Game Scores & Validity

• noun

1

A small piece of material, such as metal, plastic, or rubber, placed between two objects or components to create or maintain a fixed gap between them.

Example

"The carpenter placed plastic spacers between the ceramic tiles to ensure the grout lines remained uniform."

2

A holding chamber attached to a metered-dose inhaler that makes it easier to inhale medication deeply into the lungs.

Example

"The pediatrician recommended using a spacer with the asthma inhaler so the child would receive the full dose of medication."

3

A region of non-coding DNA situated between transcribed genes, particularly between repeated ribosomal RNA genes.

Example

"Researchers sequenced the ribosomal spacer region to distinguish between closely related fungal species."

Synonyms
View all synonyms for spacer

• Rhymes for spacer

• Nearby Words

spaceflight
spaceman
spaceport
spacer
spaceship
spacesuit
spacetime

Cite this Entry

Wordmom. (2026). Definition of Spacer. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/spacer
Built for writers, students, and competitive word game players, Wordmom combines an uncluttered English dictionary and thesaurus with fast, pattern-based word finders so you can verify definitions, synonyms, and high-scoring tile plays in one place.
Word Games & Solvers
Word FinderScrabble Word FinderWords With Friends CheatWordle SolverAnagram Solver
Dictionary & Reference
DictionarySynonymsAntonymsWords
Community
Contact UsEditorial PolicyPrivacy PolicyTerms and Conditions
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A. and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. Words With Friends® is a registered trademark of Zynga Inc. Wordle® is a registered trademark of The New York Times Company. Other referenced game titles and tournament lexicon codes (including NASPA NWL and WESPA/HarperCollins CSW) are trademarks of their respective owners. Wordmom is an independent reference utility for educational and entertainment purposes and is not affiliated with, sponsored by, or endorsed by Hasbro, Mattel, Spear, Zynga, The New York Times Company, NASPA, WESPA, or HarperCollins Publishers. All game names are referenced strictly under nominative fair use to indicate compatibility.