[hahy-dril-uh] /haɪˈdrɪl ə/
a submerged aquatic plant, Hydrilla verticillata, native to the Old World, that has become a pest weed in U.S. lakes and waterways.
any aquatic plant of the Eurasian genus Hydrilla, growing underwater and forming large masses: used as an oxygenator in aquaria and pools. It was introduced in the S US where it has become a serious problem, choking fish and hindering navigation
noun 1. a colorless corrosive liquid, HI, an aqueous solution of hydrogen iodide. /ˌhaɪdrɪˈɒdɪk/ noun 1. the colourless or pale yellow aqueous solution of hydrogen iodide: a strong acid
[hahy-droh] /ˈhaɪ droʊ/ noun, plural hydros for 2, 3. 1. Informal. hydroelectric power. 2. Informal. . 3. British. adjective 4. Informal. of, relating to, or furnishing water, water power, or hydroelectricity: funds for new hydro projects. 1. a combining form meaning “water,” used in the formation of compound words: hydroplane; hydrogen. 1. a combining form […]
[hahy-droh-ai-roh-biks] /ˌhaɪ droʊ ɛəˈroʊ bɪks/ noun, (used with a plural verb) 1. aerobic exercises performed in water, as in a swimming pool.
/ˌhaɪdrəʊəˈkuːstɪks/ noun 1. (functioning as sing) (physics) the study of sound travelling through water