acid

7 definitions • 7 examples

any of various usually liquid substances that can react with and sometimes dissolve other materials:

acetic/hydrochloric/lactic acid

Vinegar is an acid.

slang for LSD (= an illegal drug that makes people see things that do not exist)

containing acid, or having similar qualities to an acid:

an acid taste/smell

acid soil

used to describe a remark or way of speaking that is cruel or criticizes something in an unkind way:

her acid wit

When she spoke her tone was acid.

any of various chemical substances that can produce salts, some of which are able to damage whatever they touch

sour in taste:

The salad dressing has an acid taste.

fig. An acid comment/remark is something said or written in strong criticism.