Meanings
nounsleep spindle (plural sleep spindles)
plural sleep spindles
- A burst of oscillatory brain activity during stage 2 sleep.
Origin
From its spindle-like appearance on an EEG.
Full word history & related roots →Cite this entry
APA
sleep spindle. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/sleep%20spindle
MLA
“sleep spindle.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/sleep%20spindle. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “sleep spindle,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/sleep%20spindle.
Source: sleep spindle on Wiktionary, CC BY-SA 4.0.