Phrase guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
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noun
A soft, heavy, brilliant glass, consisting essentially of a silicate of lead and potassium. It is used for tableware and in optical instruments.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
optical glass of high dispersion and high refractive index
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: optical flint
Antonyms: none provided
Broader terms: optical glass
History
Originally made of calcined flints.
