critical mass cri·ti·cal·mass uncommon noun 1. the minimum amount (of something) required to start or maintain a venture “the battle for the computer market has now reached critical mass” “there is now a critical mass of successful women to take the lead” “they sold the business because it lacked critical mass” Synonymscritical mass 2. the minimum mass of fissionable material that can sustain a chain reaction Synonymscritical mass Related words Broader terms massamount WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
