12-letter words containing m, a, s, t, r
- headmistress — a woman in charge of a private school.
- hellgramites — Plural form of hellgramite.
- hemarthrosis — (pathology) bleeding in the joints.
- hemihydrates — Plural form of hemihydrate.
- hemiparasite — A plant that obtains or may obtain part of its food by parasitism, e.g., mistletoe, which also photosynthesizes.
- heterogamous — Genetics. having unlike gametes, or reproducing by the union of such gametes (opposed to isogamous).
- hidrocystoma — An adenoma of the sweat glands.
- homesteaders — Plural form of homesteader.
- house martin — a small European swallow, Delichon urbica, that builds its nest under the eaves of houses.
- housemasters — Plural form of housemaster.
- human rights — basic civil freedoms
- hypermarkets — Plural form of hypermarket.
- hypogastrium — the lower and median part of the abdomen.
- hysteromania — unusually increased sexual desire in a woman
- iatrochemist — a person who practises iatrochemistry
- idea hamster — a person who is employed as a source of new ideas
- illuminators — Plural form of illuminator.
- immatureness — not mature, ripe, developed, perfected, etc.
- immaturities — Plural form of immaturity.
- immigrations — Plural form of immigration.
- immiseration — to make miserable.
- immoralistic — (somewhat, rare) Of or relating to immoralism.
- immoralities — Plural form of immorality.
- immortalised — to bestow unending fame upon; perpetuate.
- immortalizes — Third-person singular simple present indicative form of immortalize.
- impartialist — Someone who is or pretends to be impartial.
- imperforates — Plural form of imperforate.
- imperialists — Plural form of imperialist.
- 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.
- implicatures — Plural form of implicature.
- importancies — Plural form of importancy.
- importations — Plural form of importation.
- imprecations — Plural form of imprecation.
- improvisator — a person who improvises; improviser.
- increasement — (rare) An increase; growth.
- informations — (legal) Plural form of information.
- insectariums — Plural form of insectarium.
- instrumental — serving or acting as an instrument or means; useful; helpful.
- intermarries — Third-person singular simple present indicative form of intermarry.
- intimidators — Plural form of intimidator.
- isochromatic — Optics. having the same color or tint.
- isodiametric — having equal diameters or axes.
- isothermally — occurring at constant temperature.
- jumpstarting — Present participle of jumpstart.
- kashmir goat — one of a long-haired breed of goat raised in Tibet and the higher elevations of China, the Indian subcontinent, Afghanistan, and Turkey for its meat, milk, and cashmere wool.
- katamorphism — metamorphism at or near the earth's surface: breaks down complex minerals into simpler ones.
- keratotomies — Plural form of keratotomy.
- lachrymosity — suggestive of or tending to cause tears; mournful.