| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Helium Burning | Physics | (triple alpha process) When temperature in the core of a star reaches 100 million degrees, three colliding helium nuclei fuse to form a carbon nucleus. This process occurs when the star is a red giant. The alpha-carbon reaction is the next step. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
