growing or living in, on or near water 水生的；水栖的 aquatic plants/life/ecosystems 水生植物／動植物／生態系統
connected with water 水的；水中的；水上的 aquatic sports 水上運動
Word Originlate 15th cent. (in the sense ‘watery, rainy’): from Old French aquatique or Latin aquaticus, from aqua ‘water’.