17-letter words containing a, e, o, l, t, r
- golf ball printer — IBM 2741
- good-time charlie — an affable, sociable, pleasure-loving man.
- grandfather clock — a pendulum floor clock having a case as tall as or taller than a person; tall-case clock; long-case clock.
- grandmother clock — a pendulum clock similar to a grandfather's clock but shorter.
- great vowel shift — a series of changes in the quality of the long vowels between Middle and Modern English as a result of which all were raised, while the high vowels (ē) and (o̅o̅), already at the upper limit, underwent breaking to become the diphthongs (ī) and (ou).
- great willow herb — either of two tall, large-flowered willow herbs, Epilobium angustifolium or E. hirsutum.
- ground angle shot — a photograph or film shot in which the lens is near the ground, usually pointing up somewhat
- haematocrystallin — Alternative form of hematocrystallin.
- haemoglobinometer — an instrument used to determine the haemoglobin content of blood
- hairy-tailed mole — a blackish North American mole, Parascalops breweri, having a short, hairy tail.
- hardware platform — a group of compatible computers that can run the same software.
- harmonic interval — an intervening period of time: an interval of 50 years.
- health care proxy — a legal document in which a person can appoint someone to make decisions about medical treatment in the event that he or she is no longer mentally competent or able to communicate.
- helicopter parent — a style of child rearing in which an overprotective mother or father discourages a child's independence by being too involved in the child's life: In typical helicopter parenting, a mother or father swoops in at any sign of challenge or discomfort.
- henry cabot lodge — Henry Cabot, 1850–1924, U.S. public servant and author: senator 1893–1924.
- henry of portugal — ("the Navigator") 1394–1460, prince of Portugal: sponsor of geographic explorations.
- heterochlamydeous — (of a plant) having a perianth consisting of distinct sepals and petals
- high-carbon steel — steel containing between 0.5 and 1.5 per cent carbon
- histamine blocker — any of various substances that act at a specific receptor site to block certain actions of histamine.
- historical method — the process of establishing general facts and principles through attention to chronology and to the evolution or historical course of what is being studied.
- hold one's breath — If you say that someone is holding their breath, you mean that they are waiting anxiously or excitedly for something to happen.
- holding operation — a plan or procedure devised to prolong the existing situation
- hole in the heart — a defect of the heart in which there is an abnormal opening in any of the walls dividing the four heart chambers
- hollerith, herman — Herman Hollerith
- homeland security — national defence
- honorable mention — a citation conferred on a contestant, exhibit, etc., having exceptional merit though not winning a top honor or prize.
- hospital gangrene — Pathology. a contagious, often fatal gangrene, especially involving amputation stumps and war wounds, occurring usually in crowded, ill-kept hospitals, and caused by putrefactive bacteria.
- hydroelectrically — Using hydroelectric power.
- hydrotherapy pool — a pool of water used for hydrotherapy
- hydrothermal vent — an opening on the floor of the sea from which hot, mineral-rich solutions issue. Compare vent1 (def 2).
- hyperalimentation — overfeeding.
- hyperbolic secant — a hyperbolic function that is the reciprocal of cosh; sech
- hyperchlorination — Chemistry. to combine or treat with chlorine. to introduce chlorine atoms into an organic compound by an addition or substitution reaction.
- hyperinflationary — (economics) Having very high levels of inflation.
- hyperpolarisation — Alternative spelling of hyperpolarization.
- hyperpolarization — The act or process of hyperpolarizing.
- hypocholesteremia — an abnormally low amount of cholesterol in the blood.
- ideogrammatically — In terms of, or by means of, ideograms.
- ignoratio elenchi — the fallacy of offering proof irrelevant to the proposition in question.
- illinois waterway — a waterway system in N Illinois made up of canals and rivers connecting Lake Michigan in Chicago with the Mississippi River. 336 miles (541 km) long.
- impersonalization — to make impersonal: The dial system impersonalized the telephone.
- implosion therapy — a form of behavior therapy involving intensive recollection and review of anxiety-producing situations or events in a patient's life in an attempt to develop more appropriate responses to similar situations in the future.
- implosive-therapy — a form of behavior therapy involving intensive recollection and review of anxiety-producing situations or events in a patient's life in an attempt to develop more appropriate responses to similar situations in the future.
- impressionability — easily impressed or influenced; susceptible: an impressionable youngster.
- improper integral — Also called infinite integral. a definite integral in which one or both of the limits of integration is infinite.
- in the altogether — wholly; entirely; completely; quite: altogether fitting.
- inertial observer — a hypothetical observer who is not accelerated with respect to an inertial system. Newton's laws of motion and the special theory of relativity apply to the measurements which would be made by such observers
- inertial platform — self-contained navigational devices used in inertial guidance, along with their mounting.
- inspector general — a comedy (1836) by Gogol.
- inspector-general — a comedy (1836) by Gogol.