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English Words Starting With M

8,594 entries — pick a word to see its definition, pronunciation, and usage.

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Noun Verb Adjective Adverb Plural noun Combining form Verb (transitive)Verb (intransitive)Verb (ambitransitive)

metaphysician
nounC2
/ˌmɛtəfɪˈzɪʃ(ə)n/A person who studies or is an expert in metaphysics, the branch of philosophy dealing with the fundamental nature of reality and existence.
metaphysicize
verbVery Low
/ˌmɛtəˈfɪzɪsaɪz/To treat or explain a subject in a speculative or abstract manner, often in the style of metaphysics.
metaphysics
nounLow in general discourse, high in academic philosophy.
/ˌmet.əˈfɪz.ɪks/The branch of philosophy concerned with the fundamental nature of reality, existence, and abstract concepts such as being, time, space, causality, and substance.
metaphyte
nounVery Low
/ˈmɛtəfʌɪt/A multicellular plant; a member of the plant kingdom as opposed to simpler plant-like organisms.
metaplasia
nounVery Low (Specialist)
/ˌmɛtəˈpleɪzɪə/The reversible transformation of one differentiated cell type into another.
metaplasm
nounRare
/ˈmɛtəˌplæz(ə)m/A term in rhetoric and linguistics referring to a change in the form of a word, often for poetic or stylistic effect.
metapolitics
nounVery Low / Specialised
/ˌmetəˈpɒlɪtɪks/A theoretical field of study concerned with the fundamental principles, assumptions, and underlying structures of political thought and discourse, rather than with specific policies or day-to-day politics.
metapontum
nounExtremely low
/ˌmɛtəˈpɒntəm/An ancient city in Magna Graecia (Southern Italy).
metaprotein
nounVery Rare / Technical
/ˌmɛtəˈprəʊtiːn/A denatured protein, especially one formed by the action of acids or alkalis, which is insoluble in water but soluble in dilute acids or alkalis.
metapsychology
nounC2
/ˌmɛtəsaɪˈkɒlədʒi/The theoretical and philosophical study of the foundational assumptions and concepts of psychology (especially psychoanalysis).
metarchon
nounExtremely Rare
/mɛˈtɑːkɒn/One who rules or governs behind the scenes; a hidden or secret ruler who exercises control over another, actual ruler.
metascope
nounExtremely Rare / Obsolete
/ˈmɛtəskəʊp/A historical optical device used for viewing infrared radiation by converting it into visible light.
metasequoia
nounVery Low
/ˌmɛtəsɪˈkwɔɪə/A genus of deciduous coniferous tree; the dawn redwood.
metasoma
nounC2/Highly Specialized
/ˌmɛtəˈsəʊmə/In zoology, specifically in arthropods like insects and arachnids, the posterior part of the body behind the prosoma (head-thorax region).
metasomatism
nounC2
/ˌmɛtəˈsəʊmətɪz(ə)m/The chemical alteration of a rock by the addition or removal of elements through fluids.
metastable
adjectivenounC2
/ˌmɛtəˈsteɪb(ə)l/A state of apparent stability that is actually temporary and can be disrupted by a small disturbance, eventually transitioning to a more stable state.
metastasio
nounC2
/ˌmɛtəˈstɑːzɪəʊ/The pen name of Pietro Trapassi (1698–1782), a highly influential Italian poet and librettist of the 18th century, whose works were set to music by numerous major composers.
metastasis
nounC2
/mɪˈtastəsɪs/The spread of cancer cells from their original site to other parts of the body.
metastasize
verbverb-intransitiveC2
/ˌmetˈæstəsaɪz/(In medicine, of a cancer) to spread from a primary site to other parts of the body via the bloodstream or lymphatic system.
metatarsal
adjectivenounC2/Technical
/ˌmetəˈtɑːs(ə)l/relating to the five long bones of the foot between the ankle and the toes.

Showing 4201–4220 of 8594 words.