dwi-

prefix

A designation prefix for undiscovered chemical elements lying two periods under a known element in the periodic table. (For example, rhenium was called dwi-manganese before its discovery in 1925.)

OriginSanskrit द्वि (dvi) ← Proto-Indo-European *dwi- →
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Meanings

prefix

alternative dvi-

  1. datedchemistryA designation prefix for undiscovered chemical elements lying two periods under a known element in the periodic table. (For example, rhenium was called dwi-manganese before its discovery in 1925.)

Origin

  1. Proto-Indo-European*dwóh₁
  2. Proto-Indo-European*dwi-
  3. Sanskritद्वि (dvi)
  4. Englishdwi-

Borrowed from Sanskrit द्वि (dvi, “two”).

More words from Sanskrit

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

Source: dwi- on Wiktionary, CC BY-SA 4.0.