16-letter words containing m, a, t, r, e
- have a hard time — experience difficulties
- have no time for — not tolerate
- haversian system — a Haversian canal and the series of concentric bony plates surrounding it.
- haymarket square — a square in Chicago: scene of a riot (Haymarket Riot) in 1886 between police and labor unionists.
- head arrangement — a roughly outlined musical arrangement that is played from memory and is often learned by ear.
- headhunting firm — a recruiting agency
- headmistressship — (rare) Alternative form of headmistress-ship.
- hematocrit-value — a centrifuge for separating the cells of the blood from the plasma.
- hematocrystallin — (biology, archaic) hemoglobin.
- hemopneumothorax — (medicine) pneumothorax and hemothorax occurring together.
- hemotherapeutics — hemotherapy.
- herman hollerith — (person) The promulgator of the punched card. Hollerith was born on 1860-02-29 and died on 1929-11-17. He graduated from Columbia University, NewYork, NY, USA. He joined the US Census Bureau as a statistician where he used a punched card device to help analyse the 1880 US census data. This punched card system stored data in 80 columns. This "80-column" concept has carried forward in various forms into modern applications. In 1896, Hollerith founded the Tabulating Machine Company to exploit his invention and in 1924 his firm became part of IBM. The Hollerith system was used for the 1911 UK census. A correspondant writes: Wasn't Hollerith's original machine first used for the 1990 US census? And I think I am right in saying that the physical layout was a 20x12 grid of round holes. The one I have seen (picture only, unfortunately, not the real thing) did not use 'columns' as such but holes were grouped into irregularly-shaped fields, such that each hole had a more-or-less independent function.
- hermaphroditical — Alternative form of hermaphroditic.
- hermitian matrix — Mathematics. a matrix, whose entries are complex numbers, equal to the transpose of the matrix whose entries are the conjugates of the entries of the given matrix.
- heterometabolism — insect development in which the young hatch in a form very similar to the adult and then mature without a pupal stage
- heterometabolous — undergoing development in which the young are born adultlike in form, often maturing without a pupal stage.
- heteropalindrome — Something that spells something else when reversed, a semordnilap.
- homeric laughter — loud, hearty laughter, as of the gods.
- homeroom teacher — the teacher attached to the homeroom of a group of students
- horseshoe magnet — a horseshoe-shaped permanent magnet.
- hydrated alumina — a crystalline, water-insoluble powder, Al(OH) 3 or Al 2 O 3 ⋅3H 2 O, obtained chiefly from bauxite: used in the manufacture of glass, ceramics, and printing inks, in dyeing, and in medicine as an antacid and in the treatment of ulcers.
- hydration number — the number of molecules of water with which an ion can combine in an aqueous solution of given concentration.
- hydraulic cement — cement that can solidify under water.
- hygrothermograph — an instrument for recording temperature and relative humidity.
- hyper-patriotism — devoted love, support, and defense of one's country; national loyalty.
- hyperaccumulator — a plant that absorbs toxins, such as heavy metals, to a greater concentration than that in the soil in which it is growing
- hypermasculinity — pertaining to or characteristic of a man or men: masculine attire.
- hyperpituitarism — overactivity of the pituitary gland.
- hyperstimulation — to rouse to action or effort, as by encouragement or pressure; spur on; incite: to stimulate his interest in mathematics.
- hypervitaminosis — an abnormal condition caused by an excessive intake of vitamins.
- immelmann (turn) — a maneuver in which an airplane is half looped to an upside-down position and then half rolled back to normal, upright flight: used to gain altitude while reversing direction
- immersion heater — a small electric coil used to heat a liquid, as a cup of water, in which it is immersed.
- immunodepressant — preventing or diminishing the immune response
- immunoregulation — (immunology) The control of immune responses between lymphocytes and macrophages.
- immunoregulatory — Of or pertaining to immunoregulation.
- impact extrusion — an extrusion process in which a slug of cold metal in a shallow die cavity is formed by the action of a rapidly moving punch that forces the metal through the die or back around the punch.
- impact parameter — the perpendicular distance from the original center of a set of scattering particles to the original line of motion of a particle being scattered.
- impact structure — a large geologic formation, as a crater, created by a comet's or meteor's collision with a planet.
- impenetrableness — The quality of being impenetrable.
- imperfect market — a market where buyers or sellers can influence the market, and there is a lack of product information
- imperfectability — The quality of not being perfectable; of being forever imperfect.
- imperturbability — incapable of being upset or agitated; not easily excited; calm: imperturbable composure.
- implied warranty — a warranty not stated explicitly by the seller of merchandise or real property but presumed for reasons of commercial or legal custom (distinguished from express warranty).
- import surcharge — a tax imposed on all imported goods, adding to any established tariffs
- impracticalities — Plural form of impracticality.
- in general terms — generally, approximately
- in-law apartment — a self-contained living area within a single-family home, as for an aging parent.
- in/into a temper — If someone is in a temper or gets into a temper, the way that they are behaving shows that they are feeling angry and impatient.
- indirect primary — a primary in which members of a party elect delegates to a party convention that in turn elects the party's candidates.
- indiscriminately — not discriminating; lacking in care, judgment, selectivity, etc.: indiscriminate in one's friendships.