潮汐能 cháoxīnéng tidal energy Origin Definitions Defs Strokes Stroke Words Sentences Sents 潮汐 cháoxī noun tides the periodic rise and fall of ocean waters caused by the gravitational pull of the moon and sun; specifically the morning tide, 潮 cháo, and evening tide, 汐 xī能 néng noun energy (physics) energy; power