20-letter words containing a, l, y, t
- forty-ninth parallel — an informal name for the Canadian border with the USA, which is in part delineated by the parallel line of latitude at 49°N
- frequency modulation — FM.
- front-end volatility — Front-end volatility is the ability of the fractions with lower boiling points, such as butane, to evaporate at normal temperatures.
- fulminate of mercury — a gray, crystalline solid, Hg(CNO) 2 , used chiefly in the manufacture of commercial and military detonators.
- generative phonology — a theory of phonology that uses a set of rules to derive phonetic representations from abstract underlying forms.
- genetically modified — biologically altered
- get away from it all — If you get away from it all, you have a holiday in a place that is very different from where you normally live and work.
- glyceryl monoacetate — acetin.
- gravimetric analysis — analysis by weight.
- heteropolysaccharide — (carbohydrate) any polysaccharide formed from two or more different kinds of monosaccharide.
- high-energy particle — Physics
- historical sociology — the sociological study of the origins and development of societies and of other social phenomena that seeks underlying laws and principles.
- holy water sprinkler — morning star (def 2).
- honeysuckle ornament — anthemion.
- horizontally opposed — A horizontally opposed engine has the cylinders set horizontally at either side of the crankshaft.
- hospitality industry — the hotel and accommodation industry
- hudson's bay blanket — a woollen blanket with wide stripes
- hydraulic fracturing — a process in which fractures in rocks below the earth's surface are opened and widened by injecting chemicals and liquids at high pressure: used especially to extract natural gas or oil.
- hydrodesulfurization — desulfurization by catalytic agents of the sulfur-rich hydrocarbons obtained from petroleum or the like during cracking or hydrocracking.
- 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.
- hyperlipoproteinemia — Pathology. any of various disorders of lipoprotein metabolism, usually characterized by abnormally high levels of cholesterol and certain lipoproteins in the blood.
- ignatius (of) loyola — Saint(born Iñigo López de Recalde) (1491-1556); Sp. priest: founder of the Society of Jesus (Jesuit order): his day is July 31
- in (or out of) play — in (or not in) the condition for continuing play
- in a class by itself — unique
- in the lap of luxury — If you say that someone lives in the lap of luxury, you mean that they live in conditions of great comfort and wealth.
- in the last analysis — after everything has been given due consideration
- incremental analysis — (testing) Partial analysis of an incomplete product to allow early feedback on its development.
- indistinguishability — The state of being indistinguishable.
- industrial democracy — control of an organization by the people who work for it, esp by workers holding positions on its board of directors
- industrial sociology — the sociological study of social relationships and social structures in business settings.
- infiltration gallery — a conduit, built in permeable earth, for collecting ground water.
- insulin-coma therapy — a former treatment for mental illness, especially schizophrenia, employing insulin-induced hypoglycemia as a method for producing convulsive seizures.
- intercalary meristem — meristem in the internode of a stem.
- international system — an internationally accepted coherent system of physical units, derived from the MKSA (meter-kilogram-second-ampere) system, using the meter, kilogram, second, ampere, kelvin, mole, and candela as the basic units (SI units) respectively of the fundamental quantities of length, mass, time, electric current, temperature, amount of substance, and luminous intensity. Abbreviation: SI.
- interpersonal theory — the theory that personality development and behavior disorders are related to and determined by relationships between persons.
- 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
- laboratory assistant — laboratory technician, lab assistant
- laboratory diagnosis — scientific analysis of a disease
- laboratory equipment — apparatus for scientific research and experiments
- 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.
- legislative assembly — the legislature of France 1791–92.
- letters testamentary — a document issued by the probate court or some officer who has authority, directing the person named as executor in a will to act in that capacity
- linearly ordered set — a set in which a relation, as “less than or equal to,” holds for all pairs of elements of the set.
- linguistic geography — dialect geography.
- llywelyn ap iorwerth — called Llywelyn the Great. died 1240, prince of Gwynedd, N Wales (1194–1238), who extended his rule over most of Wales
- 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.
- lower yosemite falls — a section of Yosemite Falls in central California, in the Yosemite National Park, that is 98 m (320 ft) high