17-letter words containing c, h, y, a
- court of chancery — (in the US) a court of equity
- court-of-chancery — chancery (def 4a).
- courtship display — behaviour that is aimed at attracting a mate
- cryptographically — In a cryptographic manner; using cryptography; for cryptographic purposes.
- cyanogen chloride — a colorless, volatile, poisonous liquid, CNCl, used chiefly in the synthesis of compounds containing the cyano group.
- cyclamen aldehyde — a colorless to light-yellow alcohol-soluble, synthetic liquid, C 13 H 18 O, having a strong floral odor, used chiefly in perfumes, especially those of soap.
- cyrillic alphabet — the alphabet derived from that of the Greeks, supposedly by Saint Cyril, for the writing of Slavonic languages: now used primarily for Russian, Bulgarian, and the Serbian dialect of Serbo-Croat
- cytoarchitectonic — Of or pertaining to cytoarchitectonics (cytoarchitecture).
- 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
- diaphragmatically — By use of the diaphragm; in a diaphragmatic way.
- diphenylacetylene — tolan.
- dwarf huckleberry — tangleberry.
- electrochemically — In an electrochemical manner.
- electromyographic — Using electromyography.
- 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.
- glymphatic system — Anatomy. the system or process by which cerebrospinal fluid moves through channels formed by glia, cleansing the mammalian brain of harmful waste.
- 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.
- homeland security — national defence
- household cavalry — (in Britain) cavalry units forming part of the ceremonial guard of the monarch.
- hyaline cartilage — the typical, translucent form of cartilage, containing little fibrous tissue.
- 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.
- hydraulic circuit — a circuit through which water or another liquid, instead of electric current, flows, but which otherwise operates in the same way as an electric circuit
- 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
- hydrotherapeutics — hydrotherapy.
- hyperbolic secant — a hyperbolic function that is the reciprocal of cosh; sech
- hyperbolic spiral — rθ = a, (where a is a constant)