soundproof

Definition

Not allowing sound through.

Etymology

From sound + -proof.

Example Sentences

• "The contestant was placed in a soundproof booth so he could not receive help from the audience."
• "The electrical activity of the subject's cerebral cortex was recorded in a state of relative rest, after a 5 min adaptation of the subject to a dark soundproof chamber. The biopotentials were recorded from the electroencephaloscope screen […]"