16-letter words containing m, a, t, h
- 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.
- hayes-compatible — (communications) A description of a modem which understands the same set of commands as one made by Hayes.
- 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.
- hemagglutinating — That causes hemagglutination.
- hemagglutination — the clumping of red blood cells.
- hemangioblastoma — (medicine) Any of several benign neoplasm tumours of the brain.
- hematocrit-value — a centrifuge for separating the cells of the blood from the plasma.
- hematocrystallin — (biology, archaic) hemoglobin.
- hemolytic anemia — an anemic condition characterized by the destruction of red blood cells: seen in some drug reactions and in certain infectious and hereditary disorders.
- hemopneumothorax — (medicine) pneumothorax and hemothorax occurring together.
- hemotherapeutics — hemotherapy.
- henley-on-thames — a city in SE Oxfordshire, in S England: annual rowing regatta.
- 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.
- high-maintenance — needing frequent maintenance or repair: My bike is high-maintenance; this is its third front wheel this month.
- home health aide — a worker, usually trained and state-certified, who provides care for elderly, sick, or disabled people in their own home.
- home heating oil — fuel oil for domestic central heating
- home-equity loan — a loan that uses equity in the borrower's home as collateral.
- 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.
- hydroformylation — the addition of a hydrogen atom and the formyl group to a double bond of a hydrocarbon by reaction with a mixture of carbon monoxide and hydrogen in the presence of a catalyst.
- 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.
- hypoalimentation — insufficient or inadequate nourishment.
- hypophosphatemia — (medicine) An electrolyte disturbance in which there is an abnormally low level of phosphate in the blood, most commonly seen when malnourished patients are given large amounts of carbohydrates, creating a high phosphorus demand in the cells of the body.
- immersion heater — a small electric coil used to heat a liquid, as a cup of water, in which it is immersed.
- immethodicalness — Lack of method; the quality of being immethodical.
- immunohematology — the study of blood and blood-forming tissue in relation to the immune response.
- import surcharge — a tax imposed on all imported goods, adding to any established tariffs
- in the meanwhile — until then, for now
- in the same boat — a vessel for transport by water, constructed to provide buoyancy by excluding water and shaped to give stability and permit propulsion.
- indian meal moth — a small pyralid moth, Plodia interpunctella, whose larvae are an important pest of stored cereals.