put on acid   Chemistry. a compound usually having a sour taste
and capable of neutralizing alkalis and reddening blue litmus
paper, containing hydrogen that can be replaced by a metal or an
electropositive group to form a salt, or containing an atom that
can accept a pair of electrons from a base. Acids are proton
donors that yield hydronium ions in water solution, or electron-
pair acceptors that combine with electron-pair donors or bases.
a substance with a sour taste. something, as a remark or piece
of writing, that is sharp, sour, or ill-natured: His criticism
was pure acid. Slang. LSD ( def 2 ). belonging or pertaining to
acids or the anhydrides of acids. having only a part of the
hydrogen of an acid replaced by a metal or its equivalent: an
acid phosphate. having a pH value of less than 7. Compare
alkaline ( def 4 ). sharp or biting to the taste; tasting like
vinegar; sour: acid fruits. sharp, biting, or ill-natured in
mood, manner, etc.: an acid remark; an acid wit. Geology.
containing much silica. Met