Definition of ptygmatic in English:

ptygmatic

adjective

Geology
  • Designating a highly sinuous folding, for example of granitic layers and veins in certain gneisses and migmatites.

Origin

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

Pronunciation

ptygmatic

/tɪɡˈmatɪk/