Meanings
nounhoroball (plural horoballs)
plural horoballs
- excessivegeometryA horosphere together with the space above it.
Origin
Coined by William Thurston (1946-2012), American mathematician. See horosphere and ball.
Full word history & related roots →Cite this entry
APA
horoball. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/horoball
MLA
“horoball.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/horoball. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “horoball,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/horoball.
Source: horoball on Wiktionary, CC BY-SA 4.0.