12-letter words containing o, r, n, a, m
- 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 moon — the moon at and about the period of fullness that is nearest to the autumnal equinox.
- hemorrhaging — a profuse discharge of blood, as from a ruptured blood vessel; bleeding.
- hire company — a company that hires things out to people
- 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.
- homoromantic — Romantically attracted to those of the same gender.
- hop hornbeam — any of several Eurasian and North American trees of the genus Ostrya, of the birch family, especially O. virginiana, bearing hoplike fruiting clusters.
- horse manure — horse's excrement
- horse marine — (formerly) a marine mounted on horseback or a cavalryman doing duty on shipboard.
- horsemanship — the art, ability, skill, or manner of a horseman.
- house martin — a small European swallow, Delichon urbica, that builds its nest under the eaves of houses.
- housewarming — a party to celebrate a person's or family's move to a new home.
- hydrodynamic — pertaining to forces in or motions of liquids.
- hymenopteran — hymenopterous.
- hypersomniac — a tendency to sleep excessively.
- hyponatremia — (medicine) An abnormally low concentration of sodium (or salt) in blood plasma.
- hysteromania — unusually increased sexual desire in a woman
- illuminators — Plural form of illuminator.
- illuminatory — Increasing informative qualities; explanatory.
- immigrations — Plural form of immigration.
- immiseration — to make miserable.
- immoderation — lack of moderation.
- impardonable — (obsolete) unpardonable.
- impersonally — In an impersonal manner.
- impersonated — to assume the character or appearance of; pretend to be: He was arrested for impersonating a police officer.
- impersonates — Third-person singular simple present indicative form of impersonate.
- impersonator — a person who pretends to be another.
- imponderable — not ponderable; that cannot be precisely determined, measured, or evaluated.
- importancies — Plural form of importancy.
- importations — Plural form of importation.
- imprecations — Plural form of imprecation.
- impregnation — to make pregnant; get with child or young.
- impressional — a strong effect produced on the intellect, feelings, conscience, etc.
- imprisonable — capable of being imprisoned or incarcerated
- in-migration — to move or settle into a different part of one's country or home territory.
- incomparable — beyond comparison; matchless or unequaled: incomparable beauty.
- incomparably — beyond comparison; matchless or unequaled: incomparable beauty.
- inflammatory — tending to arouse anger, hostility, passion, etc.: inflammatory speeches.
- infomercials — Plural form of infomercial.
- informations — (legal) Plural form of information.
- informercial — infomercial.
- informidable — (obsolete) Not formidable; not to be feared or dreaded.
- infrakingdom — (taxonomy) A taxonomic category sometimes inserted below subkingdom.