13-letter words containing m, i, t, h, r, a
- histogramming — (mathematics) The construction of histograms.
- home straight — the section of a racecourse forming the approach to the finish
- homochromatic — of or relating to one hue; monochromatic.
- homoiothermal — having a body temperature that is relatively constant and mostly independent of the temperature of the environment; warm-blooded (opposed to poikilothermic).
- humanitarians — Plural form of humanitarian.
- 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.
- hygrometrical — Alternative form of hygrometric.
- 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.
- hyperromantic — extremely or excessively romantic
- 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
- 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.
- imperial moth — a yellow moth, Eacles imperialis, having a diagonal band of pinkish brown or purple: the hairy larvae feed on the leaves of hickory, oak, etc.
- inharmonicity — the quality of being inharmonic
- initial rhyme — beginning rhyme.
- isobathytherm — a line on a chart or diagram of a body of water, connecting depths having the same temperature.
- isothermobath — a line drawn on a diagram of a vertical section of the ocean connecting all points having equal temperature.
- kinematograph — cinematograph.
- light mineral — any rock-forming mineral that has a specific gravity of less than 2.8 and is generally light in color.
- logarithmancy — Divination using logarithms.
- lucifer match — friction match.
- macrolecithal — megalecithal.
- mantis shrimp — any stomatopod crustacean having a pair of appendages modified for grasping prey and resembling those of a mantis.
- mao inhibitor — any of various substances, as isocarboxazid and phenelzine, that block enzymatic breakdown of certain monoamine neurotransmitters: used to treat severe depression. Abbreviation: MAOI.
- marbled white — any butterfly of the satyrid genus Melanargia, with panelled black-and-white wings, but technically a brown butterfly; found in grassland
- maria theresa — 1717–80, archduchess of Austria; queen of Hungary and Bohemia 1740–80 (wife of Francis II; mother of Joseph II, Leopold II, Marie Antoinette).
- marsh trefoil — buck bean.
- martin luther — Martin [mahr-tn;; German mahr-teen] /ˈmɑr tn;; German ˈmɑr tin/ (Show IPA), 1483–1546, German theologian and author: leader, in Germany, of the Protestant Reformation.
- martini-henry — a breech-loaded .45 caliber rifle adopted in 1871 as the standard British service weapon, using a center-fire metallic cartridge filled with black powder.
- mass hysteria — a condition affecting a group of persons, characterized by excitement or anxiety, irrational behavior or beliefs, or inexplicable symptoms of illness.
- master switch — a switch that can be used to turn on or off the supply of electricity to a building or to certain equipment
- mastigophoran — Also, mastigophore [mas-ti-guh-fawr, -fohr] /ˈmæs tɪ gəˌfɔr, -ˌfoʊr/ (Show IPA). a protozoan of the phylum Mastigophora.
- mastigophoric — Carrying or wielding a whip.
- matchboarding — a construction of matchboards.
- matthew paris — Matthew, Matthew of Paris.
- mephobarbital — The drug methylphenobarbital.
- merchant ship — law: commercial vessel
- metachromasia — A characteristic change in the colour of staining carried out in biological tissues, exhibited by certain aniline dyes when they bind to particular substances present in these tissues, called chromotropes.
- metachromatic — change of color, especially that due to variation in the temperature of a body.
- metaheuristic — An experimental heuristic method for solving a general class of computational problems by combining user procedures in the hope of obtaining a more efficient or robust procedure.
- metamorphosis — Biology. a profound change in form from one stage to the next in the life history of an organism, as from the caterpillar to the pupa and from the pupa to the adult butterfly. Compare complete metamorphosis.