# petasecond

> English word · Noun · IPA /ˈpɛ.təˌsɛk.ənd/

## Definitions
1. An SI unit of time equal to 10¹⁵ seconds. Symbol: Ps. (= 31 709 800 years)

## Etymology
From peta- + second.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/petasecond