12-letter words containing a, r, m, o
- 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.
- housemasters — Plural form of housemaster.
- housewarming — a party to celebrate a person's or family's move to a new home.
- hydatidiform — like or resembling a hydatid
- 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.
- hygrothermal — (physics) Of or pertaining to both humidity and temperature.
- hymenopteran — hymenopterous.
- hyperosmolar — Of, pertaining to, or as a result of hyperosmolarity.
- hypersarcoma — a growth of proud or fungous flesh
- hypersomniac — a tendency to sleep excessively.
- hypervolemia — (medicine) An abnormal increase in the volume of blood circulating through the body.
- hypogastrium — the lower and median part of the abdomen.
- hyponatremia — (medicine) An abnormally low concentration of sodium (or salt) in blood plasma.
- hysteromania — unusually increased sexual desire in a woman
- iambographer — a person who writes iambs
- iatrochemist — a person who practises iatrochemistry
- illuminators — Plural form of illuminator.
- illuminatory — Increasing informative qualities; explanatory.
- imidacloprid — The insecticide 1-(6-chloro-3-pyridylmethyl)-N-nitroimidazolidin-2-ylideneamine used to control fleas in domestic pets.
- immemorially — In an immemorial manner.
- immigrations — Plural form of immigration.
- immiseration — to make miserable.
- immoderately — In an immoderate manner.
- immoderation — lack of moderation.
- immoralistic — (somewhat, rare) Of or relating to immoralism.
- immoralities — Plural form of immorality.
- immortalised — to bestow unending fame upon; perpetuate.
- immortalized — to bestow unending fame upon; perpetuate.
- immortalizes — Third-person singular simple present indicative form of immortalize.
- impardonable — (obsolete) unpardonable.
- imperatorial — Commanding; authoritative.
- imperforable — not able to be perforated
- imperforated — Also, imperforated. not perforate; having no perforation.
- imperforates — Plural form of imperforate.
- 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.
- import quota — the maximum amount of a product that can be imported into a country within a given period of time
- import trade — goods, services and products brought into a country and which were bought from another country
- importancies — Plural form of importancy.
- importations — Plural form of importation.
- imprecations — Plural form of imprecation.
- impregnation — to make pregnant; get with child or young.