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单词 ptygmatic
释义

ptygmatic

/tɪɡˈmatɪk/
Geology
adjective
Designating a highly sinuous folding, for example of granitic layers and veins in certain gneisses and migmatites.
  • Originally used by Sederholm in a somewhat broader sense..

Origin

Early 20th century. From ancient Greek πτύγματ-, πτύγμα fold, anything folded + -ic, after Swedish ptygmatisk.

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更新时间:2024/12/23 9:11:47