chemical fingerprint

noun

1. a distinctive characteristic or pattern indicating the presence of a certain molecule, used to identify a chemical.

Example Sentences

They were looking for a possible chemical fingerprint of space travel.

From Science News For Students

Observatories have previously detected hydrogen’s chemical fingerprint in the lunar “regolith,” or soil.

From Time

The researchers compared the chemical fingerprints of these fossilized eggs with those of eggs from hard-shelled dinosaur.

From Science News For Students

This technique offers what is basically a chemical fingerprint of a material.

From Science News For Students

They matched the beached blocks to those in the collections using those chemical fingerprints.

From Science News For Students