12-letter words containing a, r, m, h, o
- 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.
- hopper frame — a window frame having one or more upper sashes hinged at the bottoms and opening inward.
- horometrical — Relating to horometry.
- 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.
- 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
- inhalatorium — a room or building in which vapours are breathed in
- inharmonical — Alternative form of inharmonic.
- inharmonious — not harmonious; discordant; unmelodious.
- isochromatic — Optics. having the same color or tint.
- isothermally — occurring at constant temperature.
- 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.
- katharometer — (science) A device used for analyzing gas mixtures by measuring their thermal conductivity.
- kurchatovium — (chemistry) A rejected name for rutherfordium.
- lachrymation — the secretion of tears, especially in abnormal abundance.
- lachrymatory — of, relating to, or causing the shedding of tears.
- lachrymiform — Shaped like a teardrop.
- lachrymosity — suggestive of or tending to cause tears; mournful.
- lamprophyres — Plural form of lamprophyre.
- lamprophyric — belonging or relating to a lamprophyre
- leopard moth — a moth, Zeuzera pyrina, having white wings spotted with black and larvae that bore into the wood of various trees and shrubs.
- longshoreman — a person employed on the wharves of a port, as in loading and unloading vessels.
- lymphography — lymphangiography.
- 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.
- macrocephaly — Cephalometry. being or having a head with a large cranial capacity.
- macroetching — to etch deeply into the surface of (a metal).
- macrophagous — (of an animal) feeding on relatively large particles of food
- macrophysics — the branch of physics that deals with physical objects large enough to be observed and treated directly.