IPA: //ˈhaɪdrədʒən//
KK: /haɪˈdrəʊdʒən/
A colorless and flammable gas that is the lightest and most abundant element in the universe, often used in various chemical processes and fuels.
Hydrogen is used in fuel cells to produce electricity.
Hydrogen → It is formed from "hydro-" (from Greek "hydor", meaning water) and "-gen" (from Greek "genes", meaning creator or former). The word "hydrogen" means creator of water, as it is a key component in the formation of water molecules.
Think of 'water' ('hydor') being created ('-gen') — that's why hydrogen is known as the creator of water.