17-letter words containing c, e, l, o
- genealogical tree — family tree.
- genetic algorithm — (GA) An evolutionary algorithm which generates each individual from some encoded form known as a "chromosome" or "genome". Chromosomes are combined or mutated to breed new individuals. "Crossover", the kind of recombination of chromosomes found in sexual reproduction in nature, is often also used in GAs. Here, an offspring's chromosome is created by joining segments choosen alternately from each of two parents' chromosomes which are of fixed length. GAs are useful for multidimensional optimisation problems in which the chromosome can encode the values for the different variables being optimised.
- geographical mile — nautical mile.
- geological survey — U.S. Government. a division of the Department of the Interior, created in 1879, that studies the nation's water and mineral resources, makes topographic surveys, and classifies and leases public lands.
- gestatorial chair — a ceremonial chair on which the pope is carried
- gigaelectron volt — one billion electron-volts. Abbreviation: GeV, Gev.
- globus hystericus — the sensation of having a lump in the throat or difficulty in swallowing for which no medical cause can be found.
- glove compartment — a compartment in the dashboard of an automobile for storing small items.
- go for the collar — to go without a hit in a game
- go like hot cakes — to be sold very quickly or in large quantities
- good-time charlie — an affable, sociable, pleasure-loving man.
- graafian follicle — one of the small vesicles containing a developing ovum in the ovary of a mammal.
- 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.
- guglielmo marconi — Guglielmo [goo-lyel-maw] /guˈlyɛl mɔ/ (Show IPA), Marchese, 1874–1937, Italian electrical engineer and inventor, especially in the field of wireless telegraphy: Nobel Prize in physics 1909.
- guilty conscience — Your conscience is the part of your mind that tells you whether what you are doing is right or wrong. If you have a guilty conscience, you feel guilty about something because you know it was wrong. If you have a clear conscience, you do not feel guilty because you know you have done nothing wrong.
- haematocrystallin — Alternative form of hematocrystallin.
- half-round chisel — a cold chisel with a semicircular cutting edge used for making narrow channels
- hall of residence — Halls of residence are buildings with rooms or flats, usually built by universities or colleges, in which students live during the term.
- hamiltonian cycle — Hamiltonian problem
- hard rock geology — (loosely) of or relating to igneous or metamorphic rocks, as in mining (hard-rock mining) and geology (hard-rock geology)
- 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.
- hemiglossectomies — Plural form of hemiglossectomy.
- henry cabot lodge — Henry Cabot, 1850–1924, U.S. public servant and author: senator 1893–1924.
- 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.
- hit for the cycle — any complete round or series of occurrences that repeats or is repeated.
- hold all the aces — If you say that someone holds all the aces, you mean that they have all the advantages in a contest or situation.
- holistic medicine — incorporating the concept of holism, or the idea that the whole is more than merely the sum of its parts, in theory or practice: holistic psychology.
- hollandaise sauce — a sauce of egg yolks, butter, lemon juice, and seasonings.
- homeland security — national defence
- hornblende schist — a variety of schist containing needles of hornblende that lie in parallel planes.
- household cavalry — (in Britain) cavalry units forming part of the ceremonial guard of the monarch.
- household effects — domestic belongings
- hubble's constant — the ratio of the recessional velocity of galaxies to their distance from the sun, with current measurements of its value ranging from 50 to 100 km/sec per megaparsec.
- hydroelectrically — Using hydroelectric power.
- hydrogen chloride — a colorless gas, HCl, having a pungent odor: the anhydride of hydrochloric acid.
- hyperbolic cosine — one of a group of functions of an angle expressed as a relationship between the distances of a point on a hyperbola to the origin and to the coordinate axes; cosh
- hyperbolic secant — a hyperbolic function that is the reciprocal of cosh; sech
- hyperbolic spiral — rθ = a, (where a is a constant)
- hyperchlorination — Chemistry. to combine or treat with chlorine. to introduce chlorine atoms into an organic compound by an addition or substitution reaction.
- hypocholesteremia — an abnormally low amount of cholesterol in the blood.
- hypodermic needle — a hollow needle used to inject solutions subcutaneously.
- hypovolemic shock — a type of shock caused by reduced blood volume, as from massive bleeding or dehydration.
- ice-cream parlour — a place where people go to eat ice cream
- identity politics — political activity or movements based on or catering to the cultural, ethnic, gender, racial, religious, or social interests that characterize a group identity.