M.S. /ˌem ˈes/ noun [countable] American English
(Master of Science) a university degree in a science subject that you can get after your first degree

[TahlilGaran] Dictionary of Contemporary English ▲

I. MS /ˌem ˈes/ noun [uncountable]
(multiple sclerosis) a serious illness that gradually destroys the nerves, causing weakness and inability to move

[TahlilGaran] Dictionary of Contemporary English ▲

II. MSc /ˌem es ˈsiː/ 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

[TahlilGaran] Dictionary of Contemporary English ▲

Ms British English, Ms. American English /mɪz, məz/
used before a woman’s family name when she does not want to be called ‘Mrs’ or ‘Miss’, or when you do not know whether she is married or not ⇒ miss, Mrs:
Dear Ms Johnson, ...

[TahlilGaran] Dictionary of Contemporary English ▲

ms noun (plural mss) [countable]
the written abbreviation of manuscript

[TahlilGaran] Dictionary of Contemporary English ▲

I. Ms British English, Ms. American English /mɪz, məz/
used before a woman’s family name when she does not want to be called ‘Mrs’ or ‘Miss’, or when you do not know whether she is married or not ⇒ miss, Mrs:
Dear Ms Johnson, ...

[TahlilGaran] Dictionary of Contemporary English ▲

II. Ms. trademark
a US magazine for women, started by the feminist writer Gloria Steinem

[TahlilGaran] Dictionary of Contemporary English ▲

MS
Master of Science 
Microsoft 
Mississippi 
More Stuff (polite form) 
Multiple Sclerosis

[TahlilGaran] Acronyms and Abbreviations Dictionary ▲

M.S.
Motor ship, Machinery survey

[TahlilGaran] Acronyms and Abbreviations Dictionary ▲