Meanings
nounNPK (uncountable)
- uncountableNitrogen, Phosphorus, Potassium (or Potash)
Origin
From the chemical symbols for each element, hence K being used for potassium (formerly known as kalium).
Full word history & related roots →Cite this entry
APA
NPK. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/NPK
MLA
“NPK.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/NPK. Accessed November 2, 2026.
Chicago
WatkinsX Dictionary, s.v. “NPK,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/NPK.
Source: NPK on Wiktionary, CC BY-SA 4.0.