20-letter words containing a, c, e, y
- elementary education — the first six to eight years of a child's education
- embryo vitrification — a method of in vitro fertilization in which the embryo is exposed to a vitreous solution and frozen before being thawed and implanted into the uterus
- employee association — an organization, other than a trade union, whose members comprise employees of a single employing organization. The aims of the association may be social, recreational, or professional
- entry qualifications — the qualifications people wishing to enter an organization, university, etc, have to have
- erythema infectiosum — a mild infectious disease of childhood, caused by a virus, characterized by fever and a red rash spreading from the cheeks to the limbs and trunk
- essential complexity — (programming) A measure of the "structuredness" of a program.
- essential fatty acid — any fatty acid required by the body in manufacturing prostaglandins, found in such foods as oily fish and nuts
- existentialistically — In an existentialist manner.
- faculty of advocates — the college or society of advocates in Scotland
- force-field analysis — a decision-making technique, often presented graphically, that identifies all the positive and negative forces impinging on a problem
- frequency modulation — FM.
- fulminate of mercury — a gray, crystalline solid, Hg(CNO) 2 , used chiefly in the manufacture of commercial and military detonators.
- genetically modified — biologically altered
- glyceryl monoacetate — acetin.
- gravimetric analysis — analysis by weight.
- grey-crowned babbler — an insect-eating Australian bird, Pomatostomus temporalis of the family Timaliidae
- have come a long way — If you say that someone or something has come a long way, you mean that they have developed, progressed, or become very successful.
- heteropolysaccharide — (carbohydrate) any polysaccharide formed from two or more different kinds of monosaccharide.
- high-energy particle — Physics
- hire-purchase system — a system of payment for a commodity in regular installments while using it.
- honeysuckle ornament — anthemion.
- hydraulic suspension — a system of motor-vehicle suspension using hydraulic members, often with hydraulic compensation between front and rear systems (hydroelastic suspension)
- hydrostatic pressure — Hydrostatic pressure is the pressure exerted by a liquid that depends on how deep it is.
- hyperadrenocorticism — Cushing's syndrome.
- hyperbolic cotangent — a hyperbolic function that is the ratio of cosh to sinh, being the reciprocal of tanh; coth
- hypercholesterolemia — the presence of an excessive amount of cholesterol in the blood.
- hyperhomocysteinemia — (medicine) The presence of an excessive amount of homocysteine in the blood.
- in a class by itself — unique
- incorporated company — a legally constituted company
- incremental analysis — (testing) Partial analysis of an incomplete product to allow early feedback on its development.
- industrial democracy — control of an organization by the people who work for it, esp by workers holding positions on its board of directors
- insulin-coma therapy — a former treatment for mental illness, especially schizophrenia, employing insulin-induced hypoglycemia as a method for producing convulsive seizures.
- integrity constraint — (database) A constraint (rule) that must remain true for a database to preserve data integrity. Integrity constraints are specified at database creation time and enforced by the database management system. Examples from a genealogical database would be that every individual must be their parent's child or that they can have no more than two natural parents.
- intercalary meristem — meristem in the internode of a stem.
- interplanetary space — the region of space occurring around the sun and planets of the solar system. The density is normally negligible although cosmic rays, meteorites, gas clouds, etc, can occur
- japanese honeysuckle — a climbing honeysuckle, Lonicera japonica, introduced into the eastern U.S. from Asia, having fragrant, white flowers that fade to yellow.
- juno and the paycock — a play (1924) by Sean O'Casey.
- lafayette escadrille — a contingent of American aviators who in 1916 served as volunteers (Escadrille Américaine) in the French air force and in 1918 became the 103rd Pursuit Squadron of the U.S. Army.
- linguistic geography — dialect geography.
- lonely hearts column — the part of a newspaper or magazine where lonely hearts ads appear
- longitude by account — the longitude of the position of a vessel as estimated by dead reckoning.
- lower layer protocol — (networking, protocol) (LLP, or lower-layer protocol) Any protocol residing in OSI layers one to four. These protocols package, route, verify and transmit datagrams. A prime example would be TCP/IP. Lower layer protocols support the upper layer protocols.
- macias nguema biyogo — a former name of Bioko.
- magical mystery tour — something exciting and mysterious; esp an exploration of a new place where somebody being shown or taken around does not know where exactly they will be going
- magnetohydrodynamics — the branch of physics that deals with the motion of electrically conductive fluids, especially plasmas, in magnetic fields. Abbreviation: MHD.
- mary, queen of scots — family name Stuart. 1542–87, queen of Scotland (1542–67); daughter of James V of Scotland and Mary of Guise. She was married to Francis II of France (1558–60), her cousin Lord Darnley (1565–67), and the Earl of Bothwell (1567–71), who was commonly regarded as Darnley's murderer. She was forced to abdicate in favour of her son (later James VI of Scotland) and fled to England. Imprisoned by Elizabeth I until 1587, she was beheaded for plotting against the English crown
- megabytes per second — (unit) (MBps, MB/s) Millions of bytes per second. A unit of data rate. 1 MB/s = 1,000,000 bytes per second (not 1,048,576).
- megakaryocytopoiesis — (biology) The cellular development process that leads to platelet production.
- memory address space — (architecture) 1. Any part of a processor's address space that is occupied by memory. 2. The range of addresses seen by a memory device relative to the base address at which it is mapped into the processor's address space.
- methyl chloroformate — a colorless liquid, C 2 H 3 ClO 2 , used chiefly in organic synthesis.