13-letter words containing a, t, h, e, m, i
- 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
- hypometabolic — Relating to hypometabolism.
- 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
- iceman cometh — a play (1946) by Eugene O'Neill.
- 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.
- in the making — the act of a person or thing that makes: The making of a violin requires great skill.
- 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.
- kathenotheism — Belief that multiple deities exist, and different deities are supreme among them at different times.
- kinematograph — cinematograph.
- kitchen match — a wooden friction match with a large head, used especially for igniting gas ovens or burners.
- light mineral — any rock-forming mineral that has a specific gravity of less than 2.8 and is generally light in color.
- lighthouseman — a lighthouse keeper
- lucifer match — friction match.
- lymphadenitis — inflammation of a lymphatic gland.
- machine-steel — low-carbon steel that can be easily machined.
- macrolecithal — megalecithal.
- magnetic head — head (def 33).
- make light of — of little weight; not heavy: a light load.
- make off with — take away
- maple heights — a city in NE Ohio.
- 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
- match fitness — the condition of being match-fit
- mathematician — an expert or specialist in mathematics.
- mathematicism — the belief that everything can be explained in mathematical terms
- mathematizing — Present participle of mathematize.
- matthew paris — Matthew, Matthew of Paris.
- mechanisation — Alternative spelling of mechanization.
- mechanization — to make mechanical.
- mephobarbital — The drug methylphenobarbital.
- merchant ship — law: commercial vessel
- mesaticephaly — the state or condition of being mesaticephalic or mesocephalic
- mesotheliomas — Plural form of mesothelioma.
- 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.