matcha UK /ˈmatʃ.ə/US /ˈmɑ.t͡ʃə/ noun1 •A type of powdered green tea, traditionally used in Japanese tea ceremonies.And that’s not all – EGCG in matcha can help improve insulin sensitivity, which aids in blood sugar control, and may help to reduce inflammation related to Alzheimer’s disease. — 2021 formsmatchas