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Definition of celotex
celotex
/ˈsɛl.ə.tɛks/
cel · o · tex
Plural:celotexes
celotex Lexical Profile
CEFR
C2
Grade
11
Tier
3
Usage
Rare
celotex Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
A type of composition fiberboard made from bagasse (sugar cane residue) or similar cellulose materials, primarily used in building construction for thermal and sound insulation.
Example
"The contractor decided to line the studio walls with sheets of celotex to significantly improve the room's acoustics and energy efficiency."
Synonyms
View all synonyms for celotexWord Nuance & Usage
Although strictly a capitalized trademark (Celotex) for a specific brand of insulation board, the term is frequently used generically in lowercase within the building trade to refer to any similar fiberboard material.
• Rhymes for celotex
Word Origin & Etymology
Coined as a trademark in the 1920s by the Celotex Corporation, likely formed as a portmanteau of 'cellulose' and 'texture'.
Usage Trend
Historical frequency of usage in published text.
180019102020
Data source: Google Books Ngram Viewer
Cite this Entry
Wordmom. (2026). Definition of Celotex. In Wordmom Dictionary. Retrieved Oct 18, 2026, from https://wordmom.com/dictionary/celotex