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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)

median lethal dose
nounC2
/ˈmiː.di.ən ˈliː.θəl dəʊs/The statistically derived dose of a substance or radiation required to kill 50% of a tested animal population within a specified period, usually a standard measure of toxicity.
median plane
nounC2
/ˈmiː.di.ən pleɪn/An imaginary vertical plane that divides the body into left and right halves.
median strip
nounB2
/ˈmiːdiən strɪp/A physical barrier or raised/planted area separating two opposing lanes of traffic on a divided highway or road.
mediant
nounRare
/ˈmiːdɪənt/In music theory, the third degree of a diatonic scale, or a note that is a third above the tonic.
mediastinum
nounTechnical
/ˌmiːdiəˈstaɪnəm/The central compartment of the thoracic cavity, located between the lungs, containing the heart, great vessels, trachea, esophagus, and other structures.
mediate
adjectiveverbverb-intransitive+1C1
/ˈmiː.di.eɪt/To act as an intermediary or go-between to help resolve a disagreement or facilitate communication.
mediated
adjectiveverbC1
/ˈmiː.di.eɪ.tɪd/Acting as an intermediary or go-between to facilitate communication, agreement, or resolution between parties.
mediation
nounC1
/ˌmiː.diˈeɪ.ʃən/The process of intervening in a dispute between parties to help them reach an agreement.
mediatize
verbverb-transitiveVery Low
/ˈmiːdɪətaɪz/To annex or subordinate (a principality, state, etc.) to a larger state, while allowing its ruler to retain some titular authority.
mediator
nounC1
/ˈmiː.di.eɪ.tə/A neutral third party who helps two or more conflicting sides to communicate and reach an agreement.
mediatrix
nounVery Low
/ˌmiːdɪˈeɪtrɪks/A woman who mediates or acts as an intermediary between parties.
medibank
nounMedium (common in Australian contexts, rare elsewhere)
/ˈmɛdɪbæŋk/An Australian private health insurance company.
medic
nounB2
/ˈmɛd.ɪk/A person trained to provide medical treatment, especially in a military or emergency context.
medicaid
nounC1
/ˈmɛdɪkeɪd/a U.S. government program that provides health insurance to people with low income or limited resources.
medical
adjectivenounC1
/ˈmɛd.ɪ.kəl/Relating to the science or practice of medicine, especially the treatment of illness and injury.
medical audit
nounC1
/ˈmed.ɪ.kəl ˈɔː.dɪt/A systematic, formal review of medical care by qualified professionals against established standards to evaluate and improve quality.
medical certificate
nounB2 (Upper Intermediate)
/ˈmedɪkəl səˈtɪfɪkət/A document signed by a qualified doctor that provides evidence of someone's health condition, fitness to work or study, or cause of absence from work.
medical dictionary
nounB2
/ˈmed.ɪ.kəl ˈdɪk.ʃən.ɚ.i/A reference book or electronic resource that lists and defines words, terms, and concepts relating to medicine and health care.
medical examination
nounB2
/ˌmed.ɪ.kəl ɪɡˌzæm.ɪˈneɪ.ʃən/A thorough physical or mental check conducted by a doctor or other qualified health professional to assess a person's state of health.
medical examiner
nounMedium
/ˈmɛdɪkəl ɪɡˈzæmɪnə/A physician, typically a pathologist, who performs autopsies and investigates deaths to determine cause and manner of death, often appointed by a government authority.

Showing 3181–3200 of 8594 words.