Already I could feel the first effects of the acid.

The source of the acid was not known last night.

There was a hint of acid in the old voice.

The second note was a dash of acid across his eyes.

It is often a type of acid, and can be dangerous to touch.

Or they may cause a buildup of acid in your blood.

What a terrible thing to lay on somebody a head full of acid.

He opened his eyes and the light was like a spray of acid.

Their most important discovery was the function of 2,3-bisphosphoglyceric acid.

It was not a good scene to confront with a head full of acid.