Meanings
nounpicohertz (plural picohertz)
- One trillionth (10⁻¹²) of a hertz.
A rough billion years ago, at an epoch when little or no magnetized-lobe plasma was in place, small clouds of denser gas from the optical double core reached the galaxy halo boundary, there to expand and radiate picohertz spherical acoustic trains of waves.
2002, Alberto C. Sadun, Philip Morrison, “Hercules A (3C 348): Phenomenology of an Unusual Active Galactic Nucleus”, in The Astronomical Journal, volume 123, number 5, →DOI, page 2312
Origin
Cite this entry
APA
picohertz. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/picohertz
MLA
“picohertz.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/picohertz. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “picohertz,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/picohertz.
Source: picohertz on Wiktionary, CC BY-SA 4.0.