WordReference Random House Unabridged Dictionary of American English © 2025
primor′dial soup′, [Biol.]
- Biochemistry, Biologythe seas and atmosphere as they existed on earth before the existence of life, consisting primarily of an oxygen-free gaseous mixture containing chiefly water, hydrogen, methane, ammonia, and carbon dioxide.
- Biochemistry, Biology, Laboratorya laboratory preparation containing the substances believed to have composed primordial soup, and used in experiments seeking to understand the origin of life.
- 1925–30