Tridymite Definition

noun

(mineralogy) A rare mineral of volcanic rocks that solidified at a high temperature, with the chemical composition silicon dioxide, SiO2. Tridymite is chemically identical to quartz, but has a different crystal structure. Sometimes contains sodium aluminum silicate, which seems to be expelled when quartz solidifies at lower temperatures.

Wiktionary

Other Word Forms of Tridymite

Noun

Singular:
tridymite
Plural:
tridymites

Origin of Tridymite

  • The name refers to the peculiar habit of crystallizing in groups of three individuals.

    From Wiktionary

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