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Definition of posterboard

posterboard

/ˈpoʊstɚˌbɔːrd/
pos · ter · board
Plural:posterboards
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posterboard Lexical Profile

posterboard Game Scores & Validity

• noun

1

North American A type of moderately stiff, thick cardboard or paperboard having a smooth, often glossy surface on one or both sides, commonly used for making posters, signs, displays, and school projects.

Example

"She bought a large sheet of white posterboard to display her charts at the annual science fair."

Synonyms
View all synonyms for posterboard

• Nearby Words

postdoctoral
postelection
poster
posterboard
posterior
posterity
postgame

Usage Trend

Historical frequency of usage in published text.

180019102020
Data source: Google Books Ngram Viewer

Cite this Entry

Wordmom. (2026). Definition of Posterboard. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/posterboard
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