Entry 2 senses · 2 variants Webster, 1913 decompress · IPA /diːkəmˈpɹɛs/ v. i. v. t. 01 v. i. to undergo the process of decompression. 1. to undergo the process of decompression. See: decompression 02 v. t. to subject to the process of decompression. 1. to subject to the process of decompression. See: decompression