# rubidium-strontium

> English word · Noun

## Definitions
1. Designating a method of geological dating based on the relative amounts in rock of rubidium-87 and its beta-decay product, strontium-87.

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