zero-grade

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English[edit]

Alternative forms[edit]

Etymology[edit]

zero (none, nothing) + grade, as in gradation (apophony).

Noun[edit]

zero-grade (plural zero-grades)

  1. (Indo-European linguistics) In Proto-Indo-European linguistics, a term used to describe 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’.