13-letter words containing r, a, t, h, i
- housing start — an instance of beginning the construction of a dwelling.
- hubristically — in a presumptuous or arrogant manner
- hudson strait — a strait connecting Hudson Bay and the Atlantic. 450 miles (725 km) long; 100 miles (160 km) wide.
- humanitarians — Plural form of humanitarian.
- hunter trials — a test for hunters held under the auspices of a hunt, in which the course is laid with obstacles to simulate actual hunting conditions.
- hunting chair — a chair having a sliding frame in front serving as a footrest.
- hybridisation — Alternative form of hybridization.
- hybridization — to cause to produce hybrids; cross.
- hydrargillite — gibbsite.
- hydrarthrosis — a build-up of fluid or water in the cavity of a joint, esp the knee joint
- hydrated lime — a soft, white, crystalline, very slightly water-soluble powder, Ca(OH) 2 , obtained by the action of water on lime: used chiefly in mortars, plasters, and cements.
- hydroboration — (chemistry) the production or organoboranes by the addition of diborane to unsaturated organic compounds.
- hydrogenating — Present participle of hydrogenate.
- hydrogenation — to combine or treat with hydrogen, especially to add hydrogen to the molecule of (an unsaturated organic compound).
- hydropathical — Alternative form of hydropathic.
- hydrostatical — Alternative form of hydrostatic.
- hydroxylation — (organic chemistry) The introduction of a hydroxyl group into a molecule, especially by the replacement of a hydrogen atom.
- hygrometrical — Alternative form of hygrometric.
- hyperactivate — (biology) To cause or undergo hyperactivation.
- hyperactively — In a hyperactive manner.
- hyperactivity — the condition of being hyperactive.
- hypercautious — Especially or unreasonably cautious.
- hypercritical — excessively or meticulously critical; overcritical.
- hypercyanotic — blueness or lividness of the skin, as from imperfectly oxygenated blood.
- hyperdactylia — the presence of extra fingers or toes.
- hyperesthesia — an abnormally acute sense of pain, heat, cold, or touch; algesia.
- hypergalactia — an abnormally large secretion of milk.
- hyperinflated — to subject to hyperinflation: hyperinflated prices.
- hypermagnetic — (physics) Extremely magnetic.
- hypermetrical — Hypermetric.
- hypermetropia — a condition of the eye in which parallel rays are focused behind the retina, distant objects being seen more distinctly than near ones; farsightedness (opposed to myopia).
- hypermorality — conformity to the rules of right conduct; moral or virtuous conduct.
- hypermutation — (uncountable) Frequent mutation.
- hypernatremia — an abnormally high concentration of sodium in the blood.
- hyperparasite — an organism that is parasitic on or in another parasite.
- hyperrational — characterized by excessive rationality
- hyperreactive — Showing a much greater than normal response to a stimulus.
- hyperromantic — extremely or excessively romantic
- hypersalinity — an excess of salt in a saline solution
- hyperthetical — Misspelling of hypothetical.
- hypervigilant — keenly watchful to detect danger; wary: a vigilant sentry.
- hypohydration — Dehydration.
- hyponatraemia — a condition in which there is a low concentration of sodium in the blood
- hypsometrical — Of or pertaining to hypsometry.
- hyracotherium — eohippus.
- iatrochemical — relating to iatrochemistry or iatrochemists
- ichthyosaurus — ichthyosaur.
- idiochromatic — (of a mineral) deriving a characteristic color from its capacity to absorb certain light rays.
- immunotherapy — treatment designed to produce immunity to a disease or enhance the resistance of the immune system to an active disease process, as cancer.
- impact wrench — an electric or pneumatic power wrench with interchangeable toolhead attachments, used for installing and removing nuts, bolts, and screws.