μετάπτωση

Etymology
From ( + ). Sense in linguistics, since Hellenistic Koine.

Noun

 * 1) sudden change of situation or a property, fluctuation
 * 2)  ablaut, vowel gradation. For Greek language: change during derivation or composition of a word, or specifically of a vowel or diphthong in a root, or stem, or an affix, either qualitative (short &harr; short), or quantitive (short &harr; long)
 * See notes
 * 1)  changes in a quantum system
 * 2)  precession
 * 3)  transition metal, in the term
 * 4)  precession
 * 5)  characterizes rifts on the Earth's crust
 * 1)  precession
 * 2)  transition metal, in the term
 * 3)  precession
 * 4)  characterizes rifts on the Earth's crust
 * 1)  characterizes rifts on the Earth's crust