I. MS /ˌem ˈes/ BrE AmE noun [uncountable]
(multiple sclerosis) a serious illness that gradually destroys the nerves, causing weakness and inability to move
II. MSc /ˌem es ˈsiː/ BrE AmE British English , MS American English noun abbreviation for
1 . Master of Science; a university degree in a science subject that you get after studying for a year or two longer after your first degree, the ↑ BSc . MSc is written after someone's name to show that they have this degree:
Sheila Cole, MSc
She has an MSc in engineering.
2 . Master of Science; in Scotland and at the universities of Oxford and Cambridge, a university degree in a science subject which is of the same level as a BSc in other universities ⇨ ↑ ma