Meanings
nounJanus particle (plural Janus particles)
plural Janus particles
- engineeringA spherical microscopic particle which has hemispheres with sharply differing properties, such as one hydrophilic hemisphere and one hydrophobic hemisphere
Origin
In reference to the two-faced god Janus.
Full word history & related roots →Cite this entry
APA
Janus particle. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Janus%20particle
MLA
“Janus particle.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Janus%20particle. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “Janus particle,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Janus%20particle.
Source: Janus particle on Wiktionary, CC BY-SA 4.0.