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