Term: chemical phenomenon: any natural phenomenon involving chemistry (as changes to atoms or molecules)
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: sidewinder: air-to-air missile with infrared homing device
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: annihilation: total destruction
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: beachcomber: a vagrant living on a beach
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: human process: a process in which human beings are involved
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: necromancer: one who practices divination by conjuring up the dead
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: hard steel: steel with more than 0.3% carbon
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: spavin: a swelling of the hock joint of a horse; resulting in lameness
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: parquet: seating on the main floor between the orchestra and the parquet circle
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: scraping: (usually plural) a fragment scraped off of something and collected
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: bevatron: a cyclotron that accelerates protons up to several billion electron volts