Browse by letter

English Words Starting With M

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

Filter

Parts of speech

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

megalopolis
nounC2
/ˌmɛɡəˈlɒpəlɪs/A very large, densely populated urban complex, typically consisting of several merging cities.
megalopolitan
adjectivenounC2+
/ˌmɛɡələʊˈpɒlɪt(ə)n/Relating to a very large city or conurbation, typically with a population of over ten million.
megalops
nounVery Rare / Technical
/ˈmɛɡəlɒps/A post-larval stage in the development of certain crabs, especially in the genus Callinectes, characterized by large, stalked eyes.
megalopsia
nounExtremely Low
/ˌmɛɡəˈlɒpsɪə/A visual disorder causing objects to appear larger than they are.
megalosaur
nounC2
/ˈmɛɡələ(ʊ)ˌsɔː/A large, carnivorous, bipedal dinosaur of the Jurassic period, belonging to the family Megalosauridae.
megan
nounMedium (Common proper noun)
/ˈmɛɡ(ə)n/A given name for females, of Welsh origin.
meganthropus
nounC2
/ˌmɛɡ(ə)nˈθrəʊpəs/An extinct genus of very large prehistoric hominins, meaning 'large man'.
megaparsec
nounRare
/ˌmɛɡəˈpɑːsɛk/A unit of distance used in astronomy, equal to one million parsecs.
megaphanerophyte
nounVery Low (C2+ Professional/Technical)
/ˌmɛɡəˈfænərə(ʊ)faɪt/A large plant with perennating buds located more than 30 metres above the ground.
megaphone
nounverb-ambitransitiveB2
/ˈmɛɡ.ə.fəʊn/A large, cone-shaped device used to amplify a person's voice, directing the sound in a particular direction.
megaphyll
nounC2 (Specialized, Technical)
/ˈmɛɡəfɪl/A leaf, especially in ferns and seed plants, characterized by having a branched vascular system and typically being large and with a complex vein network.
megapixel
nounB2
/ˈmeɡəpɪks(ə)l/A unit of graphic resolution equal to one million pixels, used especially to describe the resolution of digital cameras.
megaplex
nounC1
/ˈmeɡ.ə.pleks/A very large cinema complex containing a large number of individual screens, typically 16 or more.
megapode
nounC2
/ˈmɛɡəpəʊd/A bird that incubates its eggs using external heat sources (like volcanic ash or decomposing vegetation) instead of its own body heat.
megapolis
nounC2
/mɛˈɡæpəlɪs/A very large, heavily populated city or urban region.
megaproject
nounC1
/ˈmɛɡ.əˌprɒdʒ.ekt/An extremely large-scale and complex construction or engineering project, typically costing at least one billion dollars.
megara
nounVery Low
/ˈmɛɡərə/The plural form of 'megaron', referring to the great halls or throne rooms in ancient Mycenaean or Greek palaces.
megaris
nounC2
/ˈmɛɡərɪs/A historical region of ancient Greece, a small peninsula and territory northwest of Athens, between the Saronic and Corinthian gulfs.
megaron
nounVery Low (C2)
/ˈmɛɡərɒn/The central hall of a Mycenaean house or palace, typically containing a hearth.
megasporangium
nounVery Low
/ˌmɛɡəspəˈrændʒɪəm/A sporangium, or spore-producing structure, that contains megaspores, which are the larger of the two types of spores produced in heterosporous plants and develop into female gametophytes.

Showing 3341–3360 of 8594 words.