English Words Starting With M

• muster

  nounverbverb-intransitiveverb-transitiveC1
  /ˈmʌstə/To gather or assemble people, especially soldiers, for inspection, service, or battle.
• muster day

  nounC2/Rare
  /ˈmʌstə deɪ/A specific day on which soldiers or militia are formally assembled for inspection, roll call, or training.
• muster roll

  nounLow-frequency / Technical
  /ˈmʌstə ˌrəʊl/An official list or register of the members of a military unit, ship's crew, or similar organised group, used to account for personnel attendance.
• musth

  nounC2
  /mʌst/A periodic, highly aggressive, and sexually active state in adult male elephants, characterized by elevated testosterone and secretions from the temporal glands.
• mut

  nounC1
  /mʌt/A dog, especially one that is not a purebred or is considered unattractive or unintelligent.
• mut dash

  nounLow
  /ˌmʌt ˈdæʃ/A sudden, quick movement or action, often with a sense of urgency or impatience.
• mutability

  nounC1/C2
  /ˌmjuːtəˈbɪlɪti/The quality or state of being subject to change or alteration.
• mutable sign

  nounLow
  /ˌmjuː.tə.bl̩ ˈsaɪn/In Western astrology, a mutable sign is one of the three modalities (qualities), specifically the four signs (Gemini, Virgo, Sagittarius, Pisces) that mark the end of a season, characterized by adaptability, flexibility, and transition.
• mutagen

  nounC1-C2
  /ˈmjuːtədʒən/A chemical or physical agent that causes genetic mutation.
• mutagenesis

  nounC2
  /ˌmjuː.təˈdʒen.ə.sɪs/The process of causing mutations (changes) in the genetic material (DNA/RNA) of an organism.
• mutagenize

  verbRare
  /ˈmjuːtədʒənʌɪz/To treat (an organism or genetic material) with a mutagen in order to induce mutations.
• mutant

  adjectivenounB2
  /ˈmjuːt(ə)nt/An organism, cell, or gene that has undergone a genetic mutation; exhibiting characteristics resulting from such a change.
• mutare

  nounLow (Formal/Technical)
  /mjuːˈtɛəri/To change, especially a legal or official document, by altering its content.
• mutarotation

  nounVery low
  /ˌmjuːtərəʊˈteɪʃ(ə)n/The change in optical rotation observed when a pure anomer of a sugar dissolves in water and equilibrates to a mixture of anomers.
• mutate

  verbverb-intransitiveverb-transitiveC1
  /mjuːˈteɪt/To undergo or cause a significant change in form, nature, or genetic structure.
• mutation

  nounC1
  /mjuːˈteɪʃ(ə)n/A permanent change in the genetic material (DNA) of an organism.
• mutation stop

  nounC2 - Very low frequency, specialized term
  /mjuːˈteɪʃən stɒp/A phonological term for a type of consonant sound, often a glottal stop, that arises in certain languages as a result of sound change, particularly the lenition or mutation of another consonant (e.g., /t/ → /ʔ/). It can also refer more specifically to a sound change where a stop consonant becomes a glottal stop.
• mutazila

  nounVery Low / Specialized
  /muːtəˈziːlə/A member of an early Islamic theological and philosophical school that emphasized reason, free will, and the unity and justice of God.
• mutazilite

  nounVery Low
  /muːˈtæzɪlaɪt/A member or adherent of the Muʿtazila, an early Islamic theological school that emphasized reason, free will, and the unity and justice of God.
• mutch

  nounverbArchaic / Historical
  /mʌtʃ/A close-fitting linen cap worn by women, children, and especially elderly women in historical contexts, primarily in Scotland and Northern England.

Showing 8341–8360 of 8594 words.