Table of Contents
Antonyms
Synonyms
3. hydrogen
noun. ['ˈhaɪdrədʒən'] a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe.
Synonyms
Etymology
- hydrogen (English)
- hydrogène (French)
- -gène (French)