English Words Starting With M

• macroform

  nounC2
  /ˈmakrə(ʊ)fɔːm/A large-scale form or structure, often referring to a distinct physical shape or organization on a grand scale.
• macrofossil

  nounLow
  /ˈmækrəʊˌfɒsəl/A fossil large enough to be studied without a microscope.
• macrogamete

  nounRare
  /ˌmæk.rəʊ.ˈɡæ.miːt/The larger, typically female, non-motile gamete produced by an organism, which fuses with a smaller microgamete during fertilization.
• macroglia

  nounRare
  /ˌmakrə(ʊ)ˈɡlʌɪə/A type of large, supportive cell found in the central nervous system.
• macroglobulin

  nounVery Low
  /ˌmæk.rəʊˈɡlɒb.jʊ.lɪn/A very large immunoglobulin (antibody) found in the blood.
• macrograph

  nounVery low
  /ˈmæk.rəʊ.ɡrɑːf/A photograph or image of an object taken at life size or larger, or a representation of an object as seen by the naked eye (without significant magnification).
• macrography

  nounVery Rare / Specialized
  /məˈkrɒɡ.rə.fi/The act or result of writing with large, widely spaced letters; large handwriting. In medicine/histology: examination or visual representation of something with the naked eye or at low magnification.
• macroinstruction

  nounLow (Technical)
  /ˌmæk.rəʊ.ɪnˈstrʌk.ʃən/In computing, a single instruction that expands into a predefined sequence of more basic instructions.
• macrolepidoptera

  plural-nounVery low frequency, technical/scientific
  /ˌmakrəʊˌlɛpɪˈdɒpt(ə)rə/A large grouping of butterflies and moths, typically those of larger size or considered 'macro' rather than 'micro'.
• macrolevel

  adjectivenounC1
  /ˈmæk.rəʊˌlɛv.əl/A large-scale or overall perspective, concerning systems, structures, or phenomena in their entirety rather than their constituent parts.
• macrolinguistics

  nounC2+
  /ˌmæk.rəʊ.lɪŋˈɡwɪs.tɪks/The branch of linguistics that studies language in its broadest contexts, including its social, cultural, psychological, and neurological aspects, and its relation to other disciplines.
• macrolith

  nounVery low (C2 / Specialist)
  /ˈmakrə(ʊ)lɪθ/A large, coarse stone tool, especially from the prehistoric period.
• macromere

  nounC2
  /ˈmakrə(ʊ)mɪə/A large, yolk-rich cell resulting from the unequal division of a fertilized egg in certain animals, especially during early embryonic development.
• macrometeorology

  nounVery Low
  /ˌmæk.rəʊˌmiː.ti.əˈrɒl.ə.dʒi/The study of large-scale atmospheric phenomena and weather patterns over extensive areas and long periods.
• macromineral

  nounC1
  /ˌmæk.rəʊˈmɪn.ər.əl/A mineral required by the body in relatively large amounts for proper physiological function.
• macromolecule

  nounC1-C2
  /ˌmæk.rəʊˈmɒl.ɪ.kjuːl/A very large molecule, such as a protein, nucleic acid, or synthetic polymer, formed from many smaller molecular units (monomers).
• macromutant

  adjectivenounVery Rare / Technical
  /ˈmakrə(ʊ)ˌmjuːt(ə)nt/An organism or cell that exhibits a mutation affecting a large-scale, visible morphological trait, as opposed to a minor biochemical change.
• macromutation

  nounLow / Specialized
  /ˌmæk.rəʊ.mjuːˈteɪ.ʃən/A large-scale, significant mutation affecting a major phenotypic trait, often producing a dramatic evolutionary change in a single step.
• macron

  nounC1-C2
  /ˈmækrɒn/A horizontal bar (¯) placed above a vowel to indicate that it is pronounced as a long sound.
• macronucleus

  nounSpecialized
  /ˌmakrəʊˈnjuːklɪəs/The larger of the two nuclei in ciliate protozoa, responsible for controlling most cellular functions.

Showing 221–240 of 8594 words.