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• ms
  ms

  millisecond; milliseconds.
• MS
  MS

  abbreviation

  Mississippi (approved especially for use with zip code).
• ms.
  ms.

  abbreviation

  manuscript.
• Ms.
  Ms.

  abbreviation

  a title of respect prefixed to a woman's name or position: unlike Miss or Mrs., it does not depend upon or indicate her marital status.
• MS.
  MS.

  abbreviation

  manuscript.
• m/s
  m/s

  meter per second; meters per second.
• M/S
  M/S

  months after sight.
• m.s.
  m.s.

  abbreviation

  modification of the stem of.
• M.S.
  M.S.

  abbreviation

  mail steamer.
• Ms
  Ms

  noun

  a title substituted for Mrs or Miss before a woman's name to avoid making a distinction between married and unmarried women Compare Miss Mrs

ms

¹ American  

1. millisecond; milliseconds.

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MS ² American  

abbreviation

1. Mississippi (approved especially for use with zip code).

2. motorship.

3. multiple sclerosis.

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ms. ³ American  

abbreviation

plural

mss

1. manuscript.

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Ms. ⁴ American  

[miz] / mɪz /

abbreviation

plural

Mses

1. a title of respect prefixed to a woman's name or position: unlike Miss or Mrs., it does not depend upon or indicate her marital status.

2. a title prefixed to a mock surname that is used to represent possession of a particular attribute, identity, etc., especially in an idealized or excessive way.

   Ms. Cooperation.

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MS. ⁵ American  

abbreviation

plural

MSS

1. manuscript.

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m/s ⁶ American  

1. meter per second; meters per second.

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M/S ⁷ American  

1. Commerce. months after sight.

2. motorship.

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m.s. ⁸ American  

abbreviation

1. modification of the stem of.

2. Commerce. months after sight.

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M.S. ⁹ American  

abbreviation

1. mail steamer.

2. Master of Science.

3. Master in Surgery.

4. motorship.

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MS. ¹ British  

abbreviation

1. manuscript

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Ms ² British  

/ mɪz, məs /

noun

1. a title substituted for Mrs or Miss before a woman's name to avoid making a distinction between married and unmarried women Compare Miss Mrs

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ms ³ British  

abbreviation

1. Montserrat

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MS ⁴ British  

abbreviation

1. Master of Surgery

2. (on gravestones) memoriae sacrum

3. Mississippi

4. motor ship

5. multiple sclerosis

6. Mauritius (international car registration)

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Ms. Cultural  

1. A title used before a woman's name, pronounced “Miz” and corresponding to Mr. before a man's.

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Pronunciation

Ms. is pronounced (miz), a pronunciation that is identical with one standard South Midland and Southern U.S. pronunciation of Mrs.

Gender

Ms. came into use in the 1950s as a title before a woman's surname when her marital status was unknown or irrelevant. In the early 1970s, the use of Ms. was adopted and encouraged by the women's movement, the reasoning being that since a man's marital status is not revealed by the title Mr., there is no reason that a woman's status should be revealed by her title. Since then Ms. has gained increasing currency, especially in business and professional use. Some women prefer the traditional Miss (still fully standard for a woman whose marital status is unknown and for an unmarried woman) or, when appropriate, Mrs. Newspaper editors sometimes reject Ms. except in quoted matter. Others use whichever of the three titles a woman prefers if her preference is known. Increasingly, newspapers avoid the use of all three titles by referring to women by their full names in first references ( Sarah Brady; Margaret Bourke-White ) and by surname only, as with men, in subsequent references: Brady, Bourke-White. Since all three titles— Ms., Miss, and Mrs. —remain in use, the preference of the woman being named or addressed or the practice of the organization or publication in which the name is to appear is often followed.

Discover More

Feminists have urged the use of Ms. because, unlike Miss or Mrs., it does not identify a woman by her marital status. (See feminism.)

Etymology

Origin of MS

(sense 2) Latin: sacred to the memory of

Example Sentences

"This is an exciting and rapidly evolving field," Ms Lu said.

From Science Daily • May 4, 2026

You may also regard the double Ms as standing for “more money.”

From The Wall Street Journal • May 2, 2026

"This offer will be extended to Ms Spears on Monday," prosecutors said.

From Barron's • Apr. 30, 2026

Figures published earlier on Thursday show Ms Morgan's government has failed to meet its own targets for bringing waits down.

From BBC • Apr. 24, 2026

Before we go into the next room, Mom motions for me to go with Ms.

From "The Wrong Way Home" by Kate O’Shaughnessy

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