18-letter words containing h, a, m, i, t
- combustion chamber — an enclosed space in which combustion takes place, such as the space above the piston in the cylinder head of an internal-combustion engine or the chambers in a gas turbine or rocket engine in which fuel and oxidant burn
- commercial attache — an attaché in an embassy or legation representing the commercial interests of his or her country.
- commodity exchange — an exchange where commodities are traded
- community hospital — (in the US) a local hospital
- comparative method — a body of procedures and criteria used by linguists to determine whether and how two or more languages are related and to reconstruct forms of their hypothetical parent language.
- crystal microphone — a microphone that uses a piezoelectric crystal to convert sound energy into electrical energy
- deanthropomorphism — the ridding of philosophy or religion of anthropomorphic beliefs and doctrines.
- destruct mechanism — a mechanism that causes the destruction of a rocket or missile when activated
- determinate growth — growth of a plant stem that is terminated early by the formation of a bud
- diatomaceous earth — an unconsolidated form of diatomite
- digital humanities — (used with a singular verb) the study of literature, philosophy, etc., as facilitated by computer technology or digital media: Digital humanities uses data analysis to find patterns in large bodies of text. the set of methodologies used in such scholarship.
- dimethyltryptamine — a hallucinogenic drug, C 12 H 16 N 2 , with an action of short duration. Abbreviation: DMT.
- diplomatic shuttle — a series of diplomatic visits to other states made by an official, such as an ambassador or envoy
- disenfranchisement — to disfranchise.
- disodium phosphate — sodium phosphate (def 2).
- dispatch documents — documents sent with a parcel, etc, detailing information such as contents, delivery address, etc
- division algorithm — the theorem that an integer can be written as the sum of the product of two integers, one a given positive integer, added to a positive integer smaller than the given positive integer. Compare Euclidean algorithm.
- double achievement — a representation of the arms of a husband beside those of his wife such that a difference of rank between them is shown.
- eastern hemisphere — the eastern part of the terrestrial globe, including Asia, Africa, Australia, and Europe.
- establishmentarian — Adhering to, advocating, or relating to the principle of an established church.
- ethical investment — an investment in a company whose activities or products are not considered by the investor to be unethical
- ethnomusicological — Relating to or pertaining to ethnomusicology.
- euclid's algorithm — (algorithm) (Or "Euclidean Algorithm") An algorithm for finding the greatest common divisor (GCD) of two numbers. It relies on the identity gcd(a, b) = gcd(a-b, b) To find the GCD of two numbers by this algorithm, repeatedly replace the larger by subtracting the smaller from it until the two numbers are equal. E.g. 132, 168 -> 132, 36 -> 96, 36 -> 60, 36 -> 24, 36 -> 24, 12 -> 12, 12 so the GCD of 132 and 168 is 12. This algorithm requires only subtraction and comparison operations but can take a number of steps proportional to the difference between the initial numbers (e.g. gcd(1, 1001) will take 1000 steps).
- executive chairman — the most senior internal position within a company, combining the duties of chairman and chief executive
- family-tree theory — a theory that describes language change in terms of genetically related languages developing in successive splits from a common parent language, such as Indo-European, as depicted by a family tree diagram.
- farmer in the dell — a game, accompanied by a song with several verses, in which one person, designated as the farmer, occupies the center of a circle of persons and is joined in the circle by other players designated as wife, child, nurse, cat, rat, and cheese, these then leaving the circle in order except for the one designated as cheese, who is left standing alone in the circle at the end.
- feldenkrais method — a system of gentle movements that promote flexibility, coordination, and self-awareness
- fifth monarchy men — (during the Commonwealth in the 17th century) a militant sect of Puritans who identified the fifth monarchy with the millennial reign of Christ and who believed they should help to inaugurate that reign by force.
- genetic algorithms — genetic algorithm
- giant peacock moth — the largest European moth, an emperor, Saturnia pyri, reaching 15 cm (6 in.) in wingspan. It is mottled brown with a prominent ocellus on each wing and being night-flying can be mistaken for a bat
- give the game away — to reveal one's intentions or a secret
- go with the stream — to conform to the accepted standards
- hamilton's problem — Hamiltonian problem
- hand it to someone — to give credit to someone
- have (got) it made — to be assured of success
- hearing impairment — partial deafness
- heart-lung machine — a device through which blood is shunted temporarily for oxygenation during surgery, while the heart or a lung is being repaired.
- heart-rate monitor — a machine that monitors or records a person's heart rate
- heat of combustion — the heat evolved when one mole of a substance is burnt in oxygen at constant volume
- heavy middleweight — a professional wrestler weighing 177–187 pounds (81–85 kg)
- hermaphrodite brig — a two-masted sailing vessel, square-rigged on the foremast and fore-and-aft-rigged on the mainmast.
- higher mathematics — the advanced portions of mathematics, customarily considered as embracing all beyond ordinary arithmetic, geometry, algebra, and trigonometry.
- histamine headache — cluster headache.
- histocompatibility — the condition of having antigenic similarities such that cells or tissues transplanted from one (the donor) to another (the recipient) are not rejected.
- histomorphological — histology.
- home entertainment — the aggregate of appliances, as stero systems, television, videocassette recorders, or computers, used for diversion in the home.
- honour moderations — (at Oxford University) the first public examination, in which candidates are placed into one of three classes of honours
- honourable mention — If something that you do in a competition is given an honourable mention, it receives special praise from the judges although it does not actually win a prize.
- human rights group — a group that campaigns for human rights
- hydroflumethiazide — A diuretic drug.