gac /ɡæk/ noun1 •The Southeast Asian fruit Momordica cochinchinensis, a reddish spiny gourd with high lycopene content.
GAC noun2 •Initialism of gender-affirming care. •Initialism of granular activated carbon.As contaminated water or air flows through GAC, contaminants sorb (stick) to the GAC surface and are removed. — 2021