17-letter words containing c, h, o, y
- cytotechnologists — the study of human cells to detect signs of cancer or other abnormalities.
- cytotrophoblastic — Relating to, or containing, cytotrophoblasts.
- dehydrochlorinase — an enzyme that catalyzes the removal of hydrogen and chlorine atoms or ions from chlorinated hydrocarbons.
- dehydrochlorinate — to remove hydrogen chloride or chlorine and hydrogen from (a substance).
- dendroarchaeology — (archaeology) the science that uses dendrochronology to date wooden material from archaeological sites.
- despotic monarchy — absolute monarchy.
- desynchronisation — (British spelling) Alternative form of desynchronization.
- desynchronization — to cause to indicate the same time, as one timepiece with another: Synchronize your watches.
- dialect geography — linguistic geography
- diethylene glycol — a syrupy colorless liquid, C 4 H 10 O 3 , used as a solvent for cellulose nitrate and as a fabric softener.
- electrochemically — In an electrochemical manner.
- electromyographic — Using electromyography.
- electrophysiology — The branch of physiology that deals with the electrical phenomena associated with nervous and other bodily activity.
- electrotechnology — the technological use of electric power
- elementary school — primary school
- encephalomyelitic — Relating to encephalomyelitis.
- encephalomyelitis — Inflammation of the brain and spinal cord, typically due to acute viral infection.
- ethnopharmacology — The scientific study correlating ethnic groups, their health, and how it relates to their physical habits and methodology in creating and using medicines.
- fee-paying school — a school which charges fees to parents of pupils
- glastonbury chair — a folding chair having legs crossed front-to-back and having arms connected to the back and to the front seat rail.
- globus hystericus — the sensation of having a lump in the throat or difficulty in swallowing for which no medical cause can be found.
- glycosphingolipid — (biochemistry) a lipid that contains at least one monosaccharide unit and either a sphingoid or a ceramide.
- go to the country — If a head of government or a government goes to the country, they hold a general election.
- haematocrystallin — Alternative form of hematocrystallin.
- haemorrhoidectomy — surgical removal of haemorrhoids
- 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 analysis — the calculation of Fourier series and their generalization.
- 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.
- 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
- hippocampal gyrus — a convolution on the inner surface of the temporal lobe of the cerebrum, bordering the hippocampus.
- hit for the cycle — any complete round or series of occurrences that repeats or is repeated.
- homeland security — national defence
- homolytic fission — the dissociation of a molecule into two neutral fragments
- household cavalry — (in Britain) cavalry units forming part of the ceremonial guard of the monarch.
- hybrid fiber coax — (networking) (HFC) A kind of physical connection used in networks for audio, video, and data. DVB (Digital Video Broadcast) is used in Europe and DOCSIS is used in N America.
- hydrochloric acid — a colorless or faintly yellow, corrosive, fuming liquid, HCl, used chiefly in chemical and industrial processes.
- hydroelectrically — Using hydroelectric power.
- hydrofluoric acid — a colorless, fuming, corrosive liquid, HF, an aqueous solution of hydrogen fluoride, used chiefly for etching glass.
- hydrofluorocarbon — Any of a class of partly chlorinated and fluorinated hydrocarbons, used as an alternative to chlorofluorocarbons in foam production, refrigeration, and other processes.
- hydrogasification — a high-temperature, high-pressure process for producing liquid or gaseous fuels from fine particles of coal and hydrogen gas
- hydrogen chloride — a colorless gas, HCl, having a pungent odor: the anhydride of hydrochloric acid.
- hydrotherapeutics — hydrotherapy.
- 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.
- hyperconnectivity — Hyperconnectivity is the use of many systems and devices so that you are always connected to social networks and other sources of information.
- hypochlorous acid — a weak, unstable acid, HOCl, existing only in solution and in the form of its salts, used as a bleaching agent and disinfectant.