Princeton's WordNet

1. meter, metre, m(noun)

   the basic unit of length adopted under the Systeme International d'Unites (approximately 1.094 yards)

2. molarity, molar concentration, M(noun)

   concentration measured by the number of moles of solute per liter of solution

3. thousand, one thousand, 1000, M, K, chiliad, G, grand, thou, yard(noun)

   the cardinal number that is the product of 10 and 100

4. megabyte, M, MB(noun)

   a unit of information equal to 1000 kilobytes or 10^6 (1,000,000) bytes

5. megabyte, mebibyte, M, MB, MiB(noun)

   a unit of information equal to 1024 kibibytes or 2^20 (1,048,576) bytes

6. M, m(adj)

   the 13th letter of the Roman alphabet

7. thousand, one thousand, 1000, m, k(adj)

   denoting a quantity consisting of 1,000 items or units

Kernerman English Learner's Dictionary

1. M(abbreviation)ˈɛm

   medium; used on clothing to show size

2. m(abbreviation)ˈɛm

   meter

   a distance of 20 m.

3. mˈɛm

   male

   Check the box next to "m" or "f."

Wiktionary

1. M(Letter)

   Monsieur

2. M(Letter)

   male

3. M(Letter)

   Monday

4. M(Letter)

   Mother

5. M(Letter)

   mature

6. M(Letter)

   nautical mile

7. M(Letter)

   Medium

8. M(Letter)

   Michigan. Usage note: this designation is usually used only within Michigan.

9. M(Letter)

   the number of minutes a player spent at the crease

10. M(Letter)

    the number of maiden overs bowled

11. m(Pronoun)

    Clitic form of my.

Origin: Contraction of (Mada)m.

Webster Dictionary

1. M(u)

   m, the thirteenth letter of the English alphabet, is a vocal consonant, and from the manner of its formation, is called the labio-nasal consonant. See Guide to Pronunciation, // 178-180, 242

2. M(u)

   as a numeral, M stands for one thousand, both in English and Latin

3. M(noun)

   a quadrat, the face or top of which is a perfect square; also, the size of such a square in any given size of type, used as the unit of measurement for that type: 500 m's of pica would be a piece of matter whose length and breadth in pica m's multiplied together produce that number

4. M(noun)

   a brand or stigma, having the shape of an M, formerly impressed on one convicted of manslaughter and admitted to the benefit of clergy

The New Hacker's Dictionary

1. M

   [SI] See quantifiers.

The Standard Electrical Dictionary

1. M

   (a) Symbol of gaseous pressure equal to one-millionth of an atmosphere. (b) The Greek m, µ, is used as the symbol of magnetic permeability.

• mAfrikaans
• مِتْرArabic
• метърBulgarian
• mPortuguese (BR)
• metr (zkratka)Czech
• m, MeterGerman
• meter; mDanish
• μέτρο (συντομογρ.)Greek
• mSpanish
• m (meetri tähis)Estonian
• مترFarsi
• metriFinnish
• mFrench
• מֶטֶרHebrew
• मीटरHindi
• metarCroatian
• méter, mHungarian
• meterIndonesian
• mItalian
• メートルJapanese
• 미터Korean
• m (metras)Lithuanian
• metrsLatvian
• mMalay
• m, meterDutch
• m (meter)Norwegian
• m., metrPolish
• مترPersian
• مترPashto
• метрыRussian
• m, meterSlovak
• meterSlovenian
• metar (metri)Serbian
• m, meterSwedish
• เมตร คำย่อของ metre(s)Thai
• metreTurkish
• 公尺(書面縮寫)Chinese (Trad.)
• мUkrainian
• میٹرUrdu
• métVietnamese
• 米（书面语缩写式）Chinese (Simp.)