12-letter words containing a, r, m, h, o
- haemoprotein — Alternative spelling of hemoprotein.
- haemorrhages — Plural form of haemorrhage.
- haemorrhagic — (chiefly, British) alternative spelling of hemorrhagic.
- haemorrhoids — Plural form of haemorrhoid.
- haemosiderin — Alternative form of hemosiderin.
- hair removal — depilatory treatment
- hair remover — depilatory cream
- hall bedroom — a small bedroom off a corridor, esp. a small bedroom formed by partitioning off the end of an upstairs corridor
- hamartiology — the doctrine of sin in Christian theology
- hammarskjold — Dag Hjalmar [dahg yahl-mahr] /dɑg ˈyɑl mɑr/ (Show IPA), 1905–61, Swedish statesman: Secretary General of the United Nations 1953–61; Nobel Peace Prize 1961.
- hammer throw — a field event in which the hammer is thrown for distance.
- harbormaster — A harbormaster is the official in charge of a harbor.
- hard-mouthed — of or relating to a horse not sensitive to the pressure of a bit.
- harmonic law — any one of three laws governing planetary motion: each planet revolves in an ellipse, with the sun at one focus; the line connecting a planet to the sun sweeps out equal areas in equal periods of time (law of areas) or the square of the period of revolution of each planet is proportional to the cube of the semimajor axis of the planet's orbit (harmonic law)
- harmonically — pertaining to harmony, as distinguished from melody and rhythm.
- 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
- harmoniously — marked by agreement in feeling, attitude, or action: a harmonious group.
- harmoniumist — a person who plays a harmonium
- harmonizable — That can be harmonized.
- harmonograph — an instrument using a system of pendulums to produce geometric images
- harmonometer — the equipment used for measuring the harmonic relations of sounds
- harvest home — the bringing home of the harvest.
- harvest moon — the moon at and about the period of fullness that is nearest to the autumnal equinox.
- headforemost — headfirst (def 1).
- heavy bomber — a large plane capable of carrying heavy bomb loads for long distances, especially at high altitudes.
- hemarthrosis — (pathology) bleeding in the joints.
- hemerocallis — the genus comprising the day lilies.
- hemichordate — belonging or pertaining to the chordates of the phylum Hemichordata, comprising small, widely distributed, marine animals, as the acorn worms.
- hemodialyzer — artificial kidney.
- hemorrhaging — a profuse discharge of blood, as from a ruptured blood vessel; bleeding.
- 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)
- heroic drama — Restoration tragedy, especially that popular in England c1660–1700, using highly rhetorical language and written in heroic couplets.
- heroicomical — blending heroic and comic elements: a heroicomic poem.
- heterogamete — either of a pair of conjugating gametes differing in form, size, structure, or sex.
- heterogamety — the condition or state of being heterogametic
- heterogamous — Genetics. having unlike gametes, or reproducing by the union of such gametes (opposed to isogamous).
- hidrocystoma — An adenoma of the sweat glands.
- hierogrammat — a writer of hierograms.
- hire company — a company that hires things out to people
- hoary marmot — a large marmot, Marmota caligata, living in mountainous areas of Siberia and northwestern North America and having a heavy, yellow-gray body, short black limbs, and black and white head and shoulders.
- hobby farmer — a person who runs a farm as a hobby rather than a means of making a living
- 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.
- home teacher — private tutor
- home theater — big-screen TV setup
- homeotherapy — therapy for a disease by means of an agent that is similar to but not identical with the causative agent of the disease.
- homeothermal — homoiothermal.
- homesteaders — Plural form of homesteader.
- homoromantic — Romantically attracted to those of the same gender.