An Etymological Dictionary of Astronomy and Astrophysics

1. The uncontrolled → fusion of hydrogen into helium.
   

2. A → thermonuclear reaction process occurring at electron → degenerate conditions in stellar material, such as in → Type Ia supernovae.

Etymology (EN): → thermonuclear; → runaway.

Etymology (PE): Vâžireš, → reaction; garmâhaste-yi, → thermonuclear; legâm gosixté literally “rampant, unrestrained,” from legâm “bridle, rein” + gosixté “broken off, torn away,” p.p. of gosixtan “to tear away, to break off.”