18-letter words containing a, c, h, r, y
- acadian flycatcher — a small, greenish tyrant flycatcher (Empidonax virescens) found in deciduous forests of E North America
- according to hoyle — according to the rules and regulations; in the prescribed, fair, or correct way
- actual bodily harm — Actual bodily harm is a criminal offence in which someone gives another person a minor injury.
- aerothermodynamics — the study of the exchange of heat between solids and gases, esp of the heating effect on aircraft flying through the air at very high speeds
- alpha-hydroxy acid — a type of organic acid, commonly used in skin-care preparations, that has a hydroxyl group attached to the carbon atom next to the carbon atom carrying the carboxyl group
- anthropocentricity — the state or quality of being anthropocentric.
- apocryphal gospels — accounts of Christ's life that are not recognized as part of the New Testament
- arachibutyrophobia — Fear of peanut butter sticking to the roof of one's mouth.
- asynchronous logic — (architecture) A data-driven circuit design technique where, instead of the components sharing a common clock and exchanging data on clock edges, data is passed on as soon as it is available. This removes the need to distribute a common clock signal throughout the circuit with acceptable clock skew. It also helps to reduce power dissipation in CMOS circuits because gates only switch when they are doing useful work rather than on every clock edge. There are many kinds of asynchronous logic. Data signals may use either "dual rail encoding" or "data bundling". Each dual rail encoded Boolean is implemented as two wires. This allows the value and the timing information to be communicated for each data bit. Bundled data has one wire for each data bit and another for timing. Level sensitive circuits typically represent a logic one by a high voltage and a logic zero by a low voltage whereas transition signalling uses a change in the signal level to convey information. A speed independent design is tolerant to variations in gate speeds but not to propagation delays in wires; a delay insensitive circuit is tolerant to variations in wire delays as well. The purest form of circuit is delay-insensitive and uses dual-rail encoding with transition signalling. A transition on one wire indicates the arrival of a zero, a transition on the other the arrival of a one. The levels on the wires are of no significance. Such an approach enables the design of fully delay-insensitive circuits and automatic layout as the delays introduced by the layout compiler can't affect the functionality (only the performance). Level sensitive designs can use simpler, stateless logic gates but require a "return to zero" phase in each transition.
- auditory phonetics — the branch of phonetics concerned with the perception of speech sounds by humans
- autobiographically — In a autobiographical manner.
- bach flower remedy — an alternative medicine consisting of a distillation from various flowers, designed to counteract negative states of mind and restore emotional balance
- bachelorette party — A bachelorette party is a party for a woman who is getting married very soon, to which only women are invited.
- biological therapy — biotherapy
- breach of security — an act that violates a country, area, or building's security measures
- carbonic anhydrase — an enzyme in blood cells that catalyses the decomposition of carbonic acid into carbon dioxide and water, facilitating the transport of carbon dioxide from the tissues to the lungs
- carbonic-anhydride — carbon dioxide.
- carboxyhaemoglobin — haemoglobin coordinated with carbon monoxide, formed as a result of carbon monoxide poisoning. As carbon monoxide is bound in preference to oxygen, tissues are deprived of oxygen
- catastrophe theory — a mathematical theory that classifies surfaces according to their form
- catcher in the rye — a novel (1951) by J. D. Salinger.
- characteristically — Also, characteristical. pertaining to, constituting, or indicating the character or peculiar quality of a person or thing; typical; distinctive: Red and gold are the characteristic colors of autumn.
- chartered surveyor — (in Britain) a surveyor who is registered with the Royal Institution of Chartered Surveyors as having the qualifications, training, and experience to satisfy their professional requirements
- chemical pregnancy — a pregnancy that is confirmed by a pregnancy test but not by clinical signs and terminates before clinical signs can be observed.
- chronostratigraphy — The branch of geology concerned with establishing the absolute ages of strata.
- claustrophobically — In a claustrophobic way.
- climbing hydrangea — a woody vine, Hydrangea anomala, of eastern Asia, having shiny, egg-shaped leaves and flat-topped white flower clusters, and climbing by aerial rootlets.
- colour photography — the art or process of taking and developing photographs in colour
- corpus christi bay — a bay in S Texas, at the mouth of the Nueces River.
- corpuscular theory — the theory, originally proposed by Newton, and revived with the development of the quantum theory, that light consists of a stream of particles
- cot death syndrome — the unexplained sudden death of an infant during sleep
- cranial osteopathy — osteopathy that focuses on the cranium and the spine
- crested flycatcher — any of various tyrant flycatchers (esp. genus Myiarchus) with a prominent crest
- crystal microphone — a microphone that uses a piezoelectric crystal to convert sound energy into electrical energy
- cytoarchitectonics — Cytoarchitecture.
- death-valley curve — a curve on a graph showing how the capital of a new company plotted against time declines sharply as the venture capital is used up before income reaches predicted levels
- decachlorobiphenyl — (organic compound) The fully chlorinated polychlorinated biphenyl containing ten chlorine atoms.
- dihydrotachysterol — a white, crystalline, water-insoluble sterol, C 28 H 46 O, derived from ergosterol: used chiefly in the treatment of hypoparathyroidism.
- diphosphoglycerate — an ester of phosphoric acid and glyceric acid that occurs in the blood and that promotes the release of hemoglobin-bound oxygen.
- each and every one — all
- economic geography — a branch of geography that deals with the relation of physical and economic conditions to the production and utilization of raw materials and their manufacture into finished products.
- electrophotography — Any of several methods of photocopying in which an image is created and then transferred between surfaces using static electricity.
- elementary teacher — a teacher in an elementary school
- fifth monarchy men — (during the Commonwealth in the 17th century) a militant sect of Puritans who identified the fifth monarchy with the millennial reign of Christ and who believed they should help to inaugurate that reign by force.
- gas chromatography — a chromatograph used for the separation of volatile substances.
- heteroscedasticity — (statistics) The property of a series of random variables of 'not' every variable having the same finite variance.
- heteroskedasticity — Alternative spelling of heteroscedasticity.
- hexachlorobiphenyl — (organic compound) Either of forty-two isomers of the polychlorinated biphenyl containing six chlorine atoms.
- highbush cranberry — a shrub, Viburnum trilobum, of northern North America, having broad clusters of white flowers and edible scarlet berries.
- historical geology — the branch of geology dealing with the history of the earth.
- honorary secretary — a unpaid person who is one of the managers of an organization
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