adjective. absorbing moisture (as from the air).
1. Verb, past participle Sugar is hygroscopic, meaning it can absorb water from the atmosphere, and this can stall evaporation. 2. Noun, singular or mass Non-occlusive moisturizers are usually humectants or hygroscopic ingredients–substances that draw moisture to the skin and hold it there for a short period of time while the skin absorbs it. 3. Adjective Propylene Carbonate is a hygroscopic chemical that pulls moisture from the air to your lips.