flint glass: meaning, definition, pronunciation and examples
C2Technical / Historical
Quick answer
What does “flint glass” mean?
A type of optical glass with a high refractive index and low dispersion, traditionally containing lead oxide.
Audio
Pronunciation
Definition
Meaning and Definition
A type of optical glass with a high refractive index and low dispersion, traditionally containing lead oxide.
Historically used for high-quality cut glassware and lenses; a term in materials science and glassmaking for specific dense, brilliant glass compositions.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. The term is equally technical in both regions.
Connotations
May carry a slightly stronger historical connotation in UK English due to its association with traditional glassmaking and Georgian/Victorian lead crystal.
Frequency
Very low frequency in general language; slightly higher historical occurrence in UK texts referencing antique glassware.
Grammar
How to Use “flint glass” in a Sentence
made of flint glasscomposed of flint glassflint glass prism/lens/beakerflint glass and crown glassVocabulary
Collocations
Examples
Examples of “flint glass” in a Sentence
verb
British English
- The goblet was beautifully flint-glassed, giving it exceptional sparkle.
American English
- The lens blank will be flint-glassed to achieve the necessary optical properties.
adjective
British English
- The flint-glass decanter was a family heirloom.
American English
- They used a flint-glass composition for the experiment.
Usage
Meaning in Context
Business
Rare; might appear in antique auction catalogues or specialty glass manufacturing.
Academic
Used in history of science, materials science, and optics to describe historical compositions and properties.
Everyday
Virtually never used. A layperson would say 'lead crystal' for glassware or 'special glass' for lenses.
Technical
Precise term in glass technology and historical optics, specifying a glass with high lead oxide content.
Vocabulary
Synonyms of “flint glass”
Strong
Neutral
Weak
Vocabulary
Antonyms of “flint glass”
Watch out
Common Mistakes When Using “flint glass”
- Confusing it with 'flint' the stone. Using it as a general term for any clear glass. Misspelling as 'flinst glass'.
FAQ
Frequently Asked Questions
The specific term 'flint glass' is largely historical. Modern optical glasses with similar properties are designated by precise codes (e.g., N-LASF9), and lead crystal glassware is still produced but often under that name.
The name originates from the high-quality silica derived from flint stones used in its original production in England, not from the lead content.
While lead oxide is a component, finished flint glass or lead crystal is generally considered safe for decorative and occasional drinkware. However, storing acidic liquids (like wine) for very long periods is not recommended.
In common parlance, 'crystal' often refers to lead crystal, which is essentially flint glass used for tableware. 'Flint glass' is the broader technical term encompassing both decorative crystal and optical glasses.
A type of optical glass with a high refractive index and low dispersion, traditionally containing lead oxide.
Flint glass is usually technical / historical in register.
Flint glass: in British English it is pronounced /ˈflɪnt ˌɡlɑːs/, and in American English it is pronounced /ˈflɪnt ˌɡlæs/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “None directly associated.”
Learning
Memory Aids
Mnemonic
Think of a FLINT stone sparking with brilliant light—FLINT GLASS is the brilliant, sparkly glass used for fine crystal and lenses.
Conceptual Metaphor
QUALITY IS DENSITY / CLARITY IS PURITY (Flint glass represents a purer, denser, more valuable form of glass).
Practice
Quiz
What is the primary distinguishing component of traditional flint glass?