Phrases starting with the letter: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Previous word: hydriodic
Next word: hydroairplane
Definition of: hydro
1. Water; of, related to, or resembling water: hydrophone.
2. Chem. Denoting a compound of hydrogen: hydrochloric. Also, before vowels, hydr–. [<Gk. hydro- <hydōr water]
Comment about this word, ask questions, or add new information about this topic: