dark matter
noun/ˌdɑːk ˈmætə(r)/
/ˌdɑːrk ˈmætər/
[uncountable] (astronomy)- according to some theories, material that exists in space but does not reflect any lightTopics Spacec2, Physics and chemistryc2
Definitions on the go
Look up any word in the dictionary offline, anytime, anywhere with the Oxford Advanced Learner’s Dictionary app.
Check pronunciation:
dark matter