12-letter words containing a, d, h, r, m
- hammer drill — a rock drill operated by compressed air in which the boring bit is not attached to the reciprocating piston
- handcraftman — handicraftsman.
- hard-mouthed — of or relating to a horse not sensitive to the pressure of a bit.
- harmonichord — a musical instrument resembling an upright piano intended to fuse the sound of a violin with the functionality of a piano, the tone therefore produced using friction rather than through striking
- headforemost — headfirst (def 1).
- headmasterly — In a manner befitting a headmaster.
- headmistress — a woman in charge of a private school.
- hemichordate — belonging or pertaining to the chordates of the phylum Hemichordata, comprising small, widely distributed, marine animals, as the acorn worms.
- hemihydrates — Plural form of hemihydrate.
- hemodialyzer — artificial kidney.
- hemorrhoidal — Usually, hemorrhoids. Pathology. an abnormally enlarged vein mainly due to a persistent increase in venous pressure, occurring inside the anal sphincter of the rectum and beneath the mucous membrane (internal hemorrhoid) or outside the anal sphincter and beneath the surface of the anal skin (external hemorrhoid)
- hereditament — any inheritable estate or interest in property.
- heroic drama — Restoration tragedy, especially that popular in England c1660–1700, using highly rhetorical language and written in heroic couplets.
- hidrocystoma — An adenoma of the sweat glands.
- holidaymaker — vacationer.
- home address — the address of one's house or flat
- home and dry — If you say that someone is, in British English home and dry, or in American English home free, you mean that they have been successful or that they are certain to be successful.
- homesteaders — Plural form of homesteader.
- hydatidiform — like or resembling a hydatid
- hydrargyrism — mercurialism.
- hydrobromate — (chemistry) hydrobromide.
- hydrodynamic — pertaining to forces in or motions of liquids.
- hydromedusae — Irregular plural form of hydromedusa.
- hydrothermal — noting or pertaining to the action of hot, aqueous solutions or gases within or on the surface of the earth.
- hyperdynamic — (physiology) Describing an increase in both blood pressure and pulse pressure.
- hypermediacy — Hypermedia literacy; the state of being conversant with hypermedia technologies.
- idea hamster — a person who is employed as a source of new ideas
- karmadharaya — a compound of two words in which the first is an adjective and the second a substantive, as blackbird, gentleman, or grandson.
- leopard moth — a moth, Zeuzera pyrina, having white wings spotted with black and larvae that bore into the wood of various trees and shrubs.
- machairodont — having sabre-like teeth; sabre-toothed
- machine word — word (def 10).
- machine-word — a unit of language, consisting of one or more spoken sounds or their written representation, that functions as a principal carrier of meaning. Words are composed of one or more morphemes and are either the smallest units susceptible of independent use or consist of two or three such units combined under certain linking conditions, as with the loss of primary accent that distinguishes black·bird· from black· bird·. Words are usually separated by spaces in writing, and are distinguished phonologically, as by accent, in many languages.
- malnourished — poorly or improperly nourished; suffering from malnutrition: thin, malnourished victims of the famine.
- marsh orchid — any of various orchids of the genus Dactylorhiza, growing in damp places and having mostly purplish flowers
- medal-holder — a person who has won a medal
- mediatorship — the position of a mediator
- merchandised — the manufactured goods bought and sold in any business.
- merchandiser — the manufactured goods bought and sold in any business.
- merchandises — the manufactured goods bought and sold in any business.
- merchandized — Simple past tense and past participle of merchandize.
- merchandizer — Alternative spelling of merchandiser.
- method actor — actor who follows the Method
- mimeographed — Simple past tense and past participle of mimeograph.
- misapprehend — to misunderstand.
- mithridatism — the production of immunity against the action of a poison by taking the poison in gradually increased doses.
- mithridatize — to induce a state of mithridatism in (a person).
- mitochondria — an organelle in the cytoplasm of cells that functions in energy production.
- mohenjo-daro — an archaeological site in Pakistan, near the Indus River: six successive ancient cities were built here.
- monohydrates — Plural form of monohydrate.
- mooch around — If you mooch around or mooch about a place, you move around there slowly with no particular purpose.