Meanings
adjectivephosphonous (not comparable)
- not comparableOf or pertaining to phosphonous acid or its derivatives.
Origin
From phosphorus by analogy with sulfurous.
Full word history & related roots →Cite this entry
APA
phosphonous. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/phosphonous
MLA
“phosphonous.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/phosphonous. Accessed November 2, 2026.
Chicago
WatkinsX Dictionary, s.v. “phosphonous,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/phosphonous.
Source: phosphonous on Wiktionary, CC BY-SA 4.0.