ˈdark ˌmatter BrE AmE noun [uncountable] technical
a type of matter that scientists think may exist. It cannot be seen but seems to affect the movements of stars
ˈdark ˌmatter BrE AmE noun [uncountable] technical
a type of matter that scientists think may exist. It cannot be seen but seems to affect the movements of stars
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012