Meanings
Origin
Abbreviation of 12 noon, modelled after AM and PM.
Full word history & related roots →Cite this entry
APA
12 NN. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/12%20NN
MLA
“12 NN.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/12%20NN. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “12 NN,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/12%20NN.
Source: 12 NN on Wiktionary, CC BY-SA 4.0.