raison d’être /rā-zɔ̃ deˈtr’/ (French)

Reason for existence (purpose or cause)

• hydrogenates
• hydrogenating
• hydrogenation
• hydrogenation of coal
• hydrogenations
• hydrogen bomb
• hydrogen bombs
• hydrogen bond
• hydrogen bonds
• hydrogen cyanide
• hydrogen ion
• hydrogen ions
• hydrogenise
• hydrogenised
• hydrogenises
• hydrogenising
• hydrogenize
• hydrogenized
• hydrogenizes
• hydrogenizing
• hydrogenous
• hydrogen peroxide
• hydrogens
• hydrogen sulphide
• hydrogeologies