English

Noun

depressant ‎(countable and uncountable, plural depressants)

1. (pharmacology) A pharmacological substance which decreases neuronal or physiological activity.

   Alcohol acts first as a stimulant and then as a depressant.

2. (mining) An agent that inhibits the flotation of a mineral or minerals.

Adjective

depressant ‎(comparative more depressant, superlative most depressant)

1. Acting as a depressant.