18-letter words containing n, a, m, h, o
- common-law husband — a man considered to be a woman's husband after the couple have cohabited for several years
- commonwealth games — an event held every four years in which sportspeople from the countries of the Commonwealth compete
- community hospital — (in the US) a local hospital
- comparison shopper — an employee of a retail store hired to visit competing stores in order to gather information regarding styles, quality, prices, etc., of merchandise offered by competitors.
- considered harmful — (programming, humour) A type of phrase based on the title of Edsger W. Dijkstra's famous note in the March 1968 Communications of the ACM, "Goto Statement Considered Harmful", which fired the first salvo in the structured programming wars. Amusingly, the ACM considered the resulting acrimony sufficiently harmful that it will (by policy) no longer print articles taking so assertive a position against a coding practice. In the ensuing decades, a large number of both serious papers and parodies bore titles of the form "X considered Y". The structured-programming wars eventually blew over with the realisation that both sides were wrong, but use of such titles has remained as a persistent minor in-joke.
- cot death syndrome — the unexplained sudden death of an infant during sleep
- 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.
- demorgan's theorem — (logic) A logical theorem which states that the complement of a conjunction is the disjunction of the complements or vice versa. In symbols: not (x and y) = (not x) or (not y) not (x or y) = (not x) and (not y) E.g. if it is not the case that I am tall and thin then I am either short or fat (or both). The theorem can be extended to combinations of more than two terms in the obvious way. The same laws also apply to sets, replacing logical complement with set complement, conjunction ("and") with set intersection, and disjunction ("or") with set union. A (C) programmer might use this to re-write if (!foo && !bar) ... as if (!(foo || bar)) ... thus saving one operator application (though an optimising compiler should do the same, leaving the programmer free to use whichever form seemed clearest).
- determinate growth — growth of a plant stem that is terminated early by the formation of a bud
- 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.
- drug on the market — Pharmacology. a chemical substance used in the treatment, cure, prevention, or diagnosis of disease or used to otherwise enhance physical or mental well-being.
- dynamic psychology — any system of psychology that emphasizes the interaction between different motives, emotions, and drives
- economic geography — a branch of geography that deals with the relation of physical and economic conditions to the production and utilization of raw materials and their manufacture into finished products.
- ethnomusicological — Relating to or pertaining to ethnomusicology.
- exchange programme — an arrangement in which people from different countries visit each other's country, perhaps to strengthen links between them or to improve foreign language skills
- farm the long acre — to graze cows on the verge of a road
- 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.
- fourth commandment — “Remember the sabbath day, to keep it holy”: fourth of the Ten Commandments.
- fourth normal form — database normalisation
- from hand to mouth — the terminal, prehensile part of the upper limb in humans and other primates, consisting of the wrist, metacarpal area, fingers, and thumb.
- 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
- greenhouse warming — the increase in the mean temperature of the earth attributed to the greenhouse effect
- hamilton's problem — Hamiltonian problem
- hand it to someone — to give credit to someone
- have money to burn — to have more money than one needs, so that some can be spent foolishly
- have one's moments — If you say that someone or something has their moments, you are indicating that there are times when they are successful or interesting, but that this does not happen very often.
- 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
- hebdomadal council — the governing council or senate of Oxford University
- heimlich manoeuvre — a technique in first aid to dislodge a foreign body in a person's windpipe by applying sudden upward pressure on the upper abdomen
- hepatosplenomegaly — Enlargement of both the liver and spleen.
- home entertainment — the aggregate of appliances, as stero systems, television, videocassette recorders, or computers, used for diversion in the home.
- homelands movement — the programme to resettle native Australians on their tribal lands
- honeysuckle family — the plant family Caprifoliaceae, typified by shrubs and woody vines having opposite leaves, clusters of usually flaring, narrow, tubular flowers, and various types of fruit, and including the elder, honeysuckle, snowberry, twinflower, and viburnum.
- 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
- hungry programmers — (body) A group of programmers producing free software.
- hydrocinnamic acid — a white crystalline compound, C 9 H 10 O 2 , with a floral odor, used in perfumes and flavoring.
- hydroxytryptamines — Plural form of hydroxytryptamine.
- hyperaldosteronism — aldosteronism.
- hypochromic anemia — an anemia characterized by an abnormally low concentration of hemoglobin in the red blood cells, often due to iron deficiency.
- immunohistological — the microscopic study of tissues with the aid of antibodies that bind to tissue components and reveal their presence.
- immunopharmacology — the branch of pharmacology concerned with the immune system
- in abraham's bosom — at rest with one's dead ancestors