Haber process

UK: /ˈhɑːbə/

WordReference Random House Unabridged Dictionary of American English © 2025

Ha′ber proc′ess, 

1. Chemistry a process for synthesizing ammonia from gaseous nitrogen and hydrogen under high pressure and temperature in the presence of a catalyst.

• named after Fritz Haber

Collins Concise English Dictionary © HarperCollins Publishers::

Haber process / ˈhɑːbə/ noun

1. an industrial process for producing ammonia by reacting atmospheric nitrogen with hydrogen at about 200 atmospheres (2 × 10⁷ pascals) and 500°C in the presence of a catalyst, usually iron

Etymology: named after Fritz Haber (1868–1934), German chemist