potassium-argon dating

1. 1.

   geological dating that relies on the proportions of radioactive potassium in a rock sample and its decay product, argon

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Questions about potassium-argon dating

What does potassium-argon dating mean?

potassium-argon dating means "geological dating that relies on the proportions of radioactive potassium in a rock sample and its decay product, argon".

Is potassium-argon dating a common word?

potassium-argon dating is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.