9-Letter Words Starting: HYDR

• undergo hydrolysis; decompose by reacting with water

• any of a class of organic compounds sharing a common functional group characterized by a nitrogen to nitrogen covalent bond with 4 substituents with at least one of them being an acyl group.

• the monovalent group -OH in such compounds as bases and some acids and alcohols

• a colorless fuming corrosive liquid; a powerful reducing agent; used chiefly in rocket fuels

• colonial coelenterates having the polyp phase dominant

• a compound of an oxide with water

• a chemical compound containing the hydroxyl group

• the branch of geology that studies water on the earth and in the atmosphere: its distribution and uses and conservation

• a device consisting of a flat or curved piece (as a metal plate) so that its surface reacts to the water it is passing through

• a speedboat that is equipped with winglike structures that lift it so that it skims the water at high speeds