flint glass

noun

A soft, heavy, brilliant glass, consisting essentially of a silicate of lead and potassium. It is used for tableware and in optical instruments.

Similar
crystal glassoptical flint
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Meanings

nounflint glass (countable and uncountable, plural flint glasses)

plural flint glasses

  1. countableuncountableA soft, heavy, brilliant glass, consisting essentially of a silicate of lead and potassium. It is used for tableware and in optical instruments.

    Synonyms: crystal glass

Synonyms & antonyms

nounA soft, heavy, brilliant glass, consisting essentially of a silicate of lead and potassium. It is used for tableware and in optical instruments.

Similar
crystal glass

More synonyms by meaning

nounoptical glass of high dispersion and high refractive index

Similar
optical flint
Broader
optical glass

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

Originally made of calcined flints.

Full word history & related roots →
Cite this entry
APA

flint glass. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/flint%20glass

MLA

“flint glass.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/flint%20glass. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “flint glass,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/flint%20glass.

Source: flint glass on Wiktionary, CC BY-SA 4.0.