That Word You Heard: Thixotropic

It all comes together once you shake it.

Ketchup fan? Then you know you’ve got to shake that bottle of your favorite brand before you squeeze it onto your food of choice. Otherwise, you’ll be met with a watery mess followed by some gunky globs. That’s because ketchup — along with a whole host of other substances ranging from clay face masks to printing inks — is thixotropic. When it sits too long, lonely and unused on a diner table or in the dark abyss that is your refrigerator, the concoction separates a...

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