zero-grade

EnglishEdit

Alternative formsEdit

EtymologyEdit

zero +‎ grade, as in gradation (apophony).

NounEdit

zero-grade (plural zero-grades)

  1. (Indo-European linguistics) In Proto-Indo-European linguistics, an ablaut form of a root characterized by the absence of the basic ablauting vowel phonemes */e/ and */o/.
    *bʰr̥- is the zero-grade of the Indo-European root *bʰer- meaning “to carry, bear”.
    Coordinate terms: e-grade, o-grade