This Strengthening Equipment Uses Air Pressure Instead Of Weights

strengthening (ˈstrɛŋθənɪŋ) n 1. the reinforcing (of something) 2. the consolidation (of something) STRENGTHENING definition: 1. present participle of strengthen 2. to make something stronger or more effective, or to become.. Learn more. She thought the stretching and strengthening exercises might help his ailing knees. It has a strengthening effect on the immune system. /ˈstrɛŋθnɪŋ/ IPA guide Other forms: strengthenings Definitions of strengthening noun the act of increasing the strength of something synonyms: fortification strengthening - WordReference English dictionary, questions, discussion and forums. All Free.