15-letter words containing h, y, a
- chimney-pot hat — a high silk hat; top hat.
- chinese parsley — coriander leaves used as an herb; cilantro
- chloral hydrate — a colourless crystalline soluble solid produced by the reaction of chloral with water and used as a sedative and hypnotic; 2,2,2-trichloro-1,1-ethanediol. Formula: CCl3CH(OH)2
- cholangiography — radiographic examination of the bile ducts after the introduction into them of a contrast medium
- cholinergically — in a cholinergic manner
- christmas party — a party organized before Christmas, usually by a firm or organization
- chromoxylograph — a coloured print created from printing with wooden blocks
- chronologically — arranged in the order of time: a chronological list of events.
- chryse planitia — a plain on Mars, the landing site of the Viking I spacecraft.
- cineangiography — the use of motion-picture recording to trace the passage of dye through blood vessels, for the diagnosis of heart and blood vessel disease
- cinemicrography — the making of a film through the lens of a microscope
- cineradiography — the filming of motion pictures through a fluoroscope or x-ray machine.
- class hierarchy — (programming) In object-oriented programming, a set of classes related by inheritance. Each class is a "subclass" of another class - its "superclass". The subclass contains all the features of its superclass, but may add new features or redefine existing features. The features of a class are the set of attributes (or "properties") that an object of that class has and the methods that can be invoked on it. If each class has a just one superclass, this is called single inheritance. The opposite is multiple inheritance, under which a class may have multiple superclasses. Single inheritance gives the class hierarchy a tree structure whereas multiple inheritance gives a directed graph. Typically there is one class at the top of the hierarchy which is the "object" class, the most general class that is an ancestor of all others and which has no superclass. In computing, as in genealogy, trees grow downwards, which is why subclasses are considered to be "below" their superclasses. When invoking a method on an object, the method is first looked for in the object's class, then the superclass of that class, and so on up the hierarchy until it is found. Thus a class need only define those methods which are specific to it and it will inherit all other methods from all its superclasses. An object of the subclass can do everything that an object of the superclass can and possible more.
- collenchymatous — Relating to collenchyma.
- copying machine — a machine that makes copies of original documents, especially by xerography.
- couples therapy — a counseling procedure that attempts to improve the adaptation and adjustment of two people who form a conjugal unit.
- cricopharyngeal — of, relating to, or involving the cricoid cartilage and the pharynx.
- cricopharyngeus — (anatomy) Part of the inferior pharyngeal constrictor, arising from the cricoid cartilage.
- crunchy granola — crisp; brittle.
- crunchy-granola — characterized by or defining oneself by ecological awareness, liberal political views, and support or use of natural products and health foods.
- cryoanaesthesia — Alternative spelling of cryoanesthesia.
- cryptographical — the science or study of the techniques of secret writing, especially code and cipher systems, methods, and the like. Compare cryptanalysis (def 2).
- crystal healing — (in alternative therapy) the use of the supposed power of crystals to affect the human energy field
- crystallography — the science concerned with the formation, properties, and structure of crystals
- cyanoethylation — the act of introducing a cyano-ethyl group into a compound
- cycling holiday — a holiday in which one cycles between destinations
- cyclohexylamine — a highly toxic and hazardous organic chemical derived from cyclohexane
- cytotrophoblast — the thickened, inner part of the mammalian placenta nearest to the fetus, covering the chorion during early pregnancy
- dadchelor party — a party primarily attended by men and held to honour and present gifts to a prospective father
- day of the dead — an annual celebration to honor the spirits of the dead, observed in Mexico and other Latin American countries on November 1 and 2, concurrently with All Saints' Day and All Souls' Day.
- day of the lord — Also called Day of Yahweh. (in Old Testament eschatology) a day of final judgment. Amos 5:18–21; Ezek. 30.
- daylight saving — the practice of advancing standard time by one hour in the spring of each year and of setting it back by one hour in the fall in order to gain an extra period of daylight during the early evening.
- decatyl alcohol — decanol.
- decipherability — to make out the meaning of (poor or partially obliterated writing, etc.): to decipher a hastily scribbled note.
- dehydrogenating — Present participle of dehydrogenate.
- dehydrogenation — to remove hydrogen from (a compound).
- delivery charge — A delivery charge is the cost of transporting or delivering goods.
- demographically — of or relating to demography, the science of vital and social statistics.
- demythification — the act of demythifying
- dephosphorylate — to remove a phosphate group from (an organic compound)
- dermatoglyphics — the lines forming a skin pattern, esp on the palms of the hands and soles of the feet
- dermatophytosis — a fungal infection of the skin, esp the feet
- diastrophically — in a diastrophic fashion
- dimethylaniline — a very toxic oily liquid used in industry to harden certain synthetic resins and as a solvent
- dimethylmethane — propane.
- dionysius thrax — c100 b.c, Greek grammarian.
- diphenhydramine — a white, crystalline, antihistaminic compound, C 17 H 21 NO, used orally, topically, and parenterally, especially for allergies.
- disenchantingly — In a disenchanting manner.
- dishearteningly — In a disheartening manner.
- distinguishably — to mark off as different (often followed by from or by): He was distinguished from the other boys by his height.