zero-grade

noun

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”.”

Meanings

nounzero-grade (plural zero-grades)

plural zero-grades · alternative zero grade

  1. Indo-European linguisticsIn 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”.

    Synonyms: vanishing grade

Synonyms & antonyms

nounIn Proto-Indo-European linguistics, an ablaut form of a root characterized by the absence of the basic ablauting vowel phonemes */e/ and */o/.

Origin

  1. GermanNullstufe
  2. Englishzero-grade

From zero + grade, as in gradation (“apophony”). Possibly after German Nullstufe.

Full word history & related roots →

Translations

Danish nultrin
  • nultrinTranslations
Dutch nultrap
  • nultrapTranslations
German Schwundstufe, Nullstufe
  • SchwundstufeTranslations
  • NullstufeTranslations
Cite this entry
APA

zero-grade. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/zero-grade

MLA

“zero-grade.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/zero-grade. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “zero-grade,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/zero-grade.

Source: zero-grade on Wiktionary, CC BY-SA 4.0.