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Words Kanji Guides About

デイサイト

also: デーサイト

Meanings

1

noun

dacite

A fine-grained volcanic rock intermediate in composition between andesite and rhyolite. Used in geology and petrology.

デイサイトは安あん山ざん岩がんと流りゅう紋もん岩がんの中ちゅう間かん的てきな組そ成せいを持もつ火か山ざん岩がんです。
Dacite is a volcanic rock with a composition intermediate between andesite and rhyolite.

Written forms

デイサイトUsage82%
Standard katakana spelling for the geological term 'dacite'.
デーサイトUsage18%
Variant katakana spelling with a long vowel; less common but still used.

Similar words

安あん山ざん岩がん
Andesite is a volcanic rock with lower silica content than dacite.
流りゅう紋もん岩がん
Rhyolite is a volcanic rock with higher silica content than dacite.

Etymology

Borrowed from English 'dacite', which derives from Dacia, the ancient Roman province where the rock was first described.