distinguishing characteristic

So far, seismologists have not identified any distinguishing characteristics of a given quake that would warn of an impending larger one.

“The inviting openness of the Sierra woods is one of their most distinguishing characteristics,” John Muir said, describing how a horse rider could easily pass through the trees.

Most foods naturally contain intrinsic fluorescent compounds, which means they glow under UV and visible light — the amount of and type of glow represent distinguishing characteristics.

“I’m thinking of Paris, for example. It’s a distinguishing characteristic, and it makes for a beautiful city.”

That, after all, is perhaps Young’s most distinguishing characteristic.