hard rubber

noun

: a firm rubber or rubber product
especially : a normally black horny substance made by vulcanizing natural rubber with high percentages of sulfur

Examples of hard rubber in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Many blades are composed of soft rubber, but some come with hard rubber blades, which work better in hot climates. — Bestreviews, The Mercury News, 5 Mar. 2025 Its hard rubber on the outside is super durable and safe and has a firm handle for easy transportation. — Bestreviews, Mercury News, 10 Nov. 2025 The hard rubber tires are not pneumatic, but when ridden, deliver a modicum of cushion and a lot of grip. — William Roberson, Forbes, 21 Oct. 2024 The top and bottom of the Play are made from a hard rubber commonly used in portable speakers. — Eric Zeman, PC Magazine, 26 Mar. 2026 See All Example Sentences for hard rubber

Word History

First Known Use

1855, in the meaning defined above

Time Traveler
The first known use of hard rubber was in 1855

Rhymes for hard rubber

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Browse Nearby Words

hard rot
hard rubber
hard rush
See all Nearby Words

Cite this Entry

“Hard rubber.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hard%20rubber. Accessed 7 Jul. 2026.

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Kids Definition

hard rubber

noun
: a firm rubber or rubber product
Last Updated: - Updated example sentences
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