proton-proton chain
A series of thermonuclear reactions partly responsible for energy production in stars…A series of thermonuclear reactions partly responsible for energy production in stars by converting hydrogen into helium.
Meaning
1 senses(uncountable)A series of thermonuclear reactions partly responsible for energy production in stars by converting hydrogen into helium.
Synonyms
1 synonymsLessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable