Meaning & use
crystal
A solid substance with a regular, repeating structure and flat, often transparent faces.
See it in a sentence
A single crystal of quartz glittered on the shelf beside her other rock samples.
Snowflakes form as tiny ice crystals that freeze into six-sided patterns.
A note on using this word
Crystal can also describe high-quality clear glass, as in 'a crystal vase,' distinct from the mineral sense.
Words with a similar meaning
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