16-letter words containing a, t, h, o, m
- flight simulator — a device used in pilot and crew training that provides a cockpit environment and sensations of flight under actual conditions.
- for the meantime — For the meantime means for a period of time from now until something else happens.
- fort sam houston — a military reservation and U.S. Army training center in San Antonio, Tex.
- fourth amendment — an amendment to the U.S. Constitution, ratified in 1791 as part of the Bill of Rights, prohibiting unlawful search and seizure of personal property.
- from one's heart — very sincerely or deeply
- geothermal power — power generated using steam produced by heat emanating from the molten core of the earth
- gold star mother — an American woman whose son or daughter has died while serving in the United States Armed Forces
- haemochromatosis — (British spelling) alternative spelling of hemochromatosis.
- hamiltonian path — Hamiltonian problem
- hamiltonian tour — Hamiltonian problem
- hammer and tongs — with great vigor, determination, or vehemence: When he starts a job he goes at it hammer and tongs.
- hard times token — any of a series of U.S. copper tokens, issued 1834–41, bearing a political inscription or advertising message and serving as currency during coin shortages.
- haussmannization — Georges Eugène [zhawrzh œ-zhen] /ʒɔrʒ œˈʒɛn/ (Show IPA), Baron, 1809–91, French administrator who improved the landscaping, street designs, and utilities systems of Paris.
- have a big mouth — to speak indiscreetly, loudly, or excessively
- have a good time — enjoy yourself, have fun
- have no time for — not tolerate
- hayes-compatible — (communications) A description of a modem which understands the same set of commands as one made by Hayes.
- 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.
- 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.
- 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.
- hydration number — the number of molecules of water with which an ion can combine in an aqueous solution of given concentration.
- 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
- 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 same boat — a vessel for transport by water, constructed to provide buoyancy by excluding water and shaped to give stability and permit propulsion.