13-letter words containing a, h, o, r
- dehydrogenase — an enzyme, such as any of the respiratory enzymes, that activates oxidation-reduction reactions by transferring hydrogen from substrate to acceptor
- dehydrogenate — to remove hydrogen from
- demochristian — a member or supporter of a Christian democratic party or movement
- demographical — of or relating to demography, the science of vital and social statistics.
- dendrophagous — feeding on the wood of trees, as certain insects.
- dermatography — a treatise or writing concerning the skin
- dermatophytes — Plural form of dermatophyte.
- dermographism — dermatographia.
- diaphanometer — an instrument used to measure transparency, esp of the atmosphere
- diaphoretical — Alternative form of diaphoretic.
- diaphototropy — the state of being diaphototropic, turning transversely to the light
- diathermanous — the property of transmitting heat as electromagnetic radiation.
- dictatorships — Plural form of dictatorship.
- discographies — Plural form of discography.
- disharmonious — inharmonious; discordant.
- disharmonized — Simple past tense and past participle of disharmonize.
- dishonourable — showing lack of honor or integrity; ignoble; base; disgraceful; shameful: Cheating is dishonorable.
- dishonourably — (British) alternative spelling of dishonorably.
- dodecahedrane — (organic compound) One of the Platonic hydrocarbons, C20H20, having the carbon atoms at the vertices of a regular dodecahedron.
- dodecahedrons — Plural form of dodecahedron.
- dolichocranic — dolichocephalic.
- dolichosaurus — any of various extinct Cretaceous aquatic reptiles that had long necks and bodies and well-developed limbs
- dolphinariums — Plural form of dolphinarium.
- domain theory — (theory) A branch of mathematics introduced by Dana Scott in 1970 as a mathematical theory of programming languages, and for nearly a quarter of a century developed almost exclusively in connection with denotational semantics in computer science. In denotational semantics of programming languages, the meaning of a program is taken to be an element of a domain. A domain is a mathematical structure consisting of a set of values (or "points") and an ordering relation, <= on those values. Domain theory is the study of such structures. ("<=" is written in LaTeX as \subseteq) Different domains correspond to the different types of object with which a program deals. In a language containing functions, we might have a domain X -> Y which is the set of functions from domain X to domain Y with the ordering f <= g iff for all x in X, f x <= g x. In the pure lambda-calculus all objects are functions or applications of functions to other functions. To represent the meaning of such programs, we must solve the recursive equation over domains, D = D -> D which states that domain D is (isomorphic to) some function space from D to itself. I.e. it is a fixed point D = F(D) for some operator F that takes a domain D to D -> D. The equivalent equation has no non-trivial solution in set theory. There are many definitions of domains, with different properties and suitable for different purposes. One commonly used definition is that of Scott domains, often simply called domains, which are omega-algebraic, consistently complete CPOs. There are domain-theoretic computational models in other branches of mathematics including dynamical systems, fractals, measure theory, integration theory, probability theory, and stochastic processes. See also abstract interpretation, bottom, pointed domain.
- donald cherry — Donald Eugene ("Don") 1936–95, U.S. jazz trumpeter.
- double-header — Sports. two games, as of baseball, between the same teams on the same day in immediate succession. two games, as of basketball, between two different pairs of teams on the same day in immediate succession.
- down the road — a long, narrow stretch with a smoothed or paved surface, made for traveling by motor vehicle, carriage, etc., between two or more points; street or highway.
- down to earth — practical and realistic: a down-to-earth person.
- down-to-earth — practical and realistic: a down-to-earth person.
- downheartedly — In a downhearted manner.
- downhill race — a competitive event in which skiers are timed in a downhill run
- dragon's head — any of several mints of the genus Dracocephalum having spikes of double-lipped flowers.
- draughtboards — Plural form of draughtboard.
- draughtsboard — The board on which draughts is played, resembling a chessboard but (depending on the game variation) often having a side length of ten squares rather than eight.
- draughtswoman — Alternative spelling of draftswoman.
- draw the shot — to deliver the bowl in such a way that it approaches the jack
- drink to that — People say 'I'll drink to that' to show that they agree with and approve of something that someone has just said.
- drop a stitch — to allow a loop of wool to fall off a knitting needle accidentally while knitting
- drop the ball — a spherical or approximately spherical body or shape; sphere: He rolled the piece of paper into a ball.
- dual monarchy — the kingdom of Austria-Hungary 1867–1918.
- dun laoghaire — a seaport in E Republic of Ireland, near Dublin.
- dutch courage — courage inspired by drunkenness or drinking liquor.
- dysmenorrheal — painful menstruation.
- dysmenorrhoea — painful menstruation.
- earth station — a terminal equipped to receive, or receive and transmit, signals from or to communications satellites.
- earth-goddess — a goddess of fertility and vegetation.
- east by north — a point on the compass 11°15′ north of east. Abbreviation: EbN.
- east hartford — a town in central Connecticut.
- eastern shore — the eastern shore of Chesapeake Bay, including parts of Maryland, Delaware, and Virginia.
- elasmobranchs — Plural form of elasmobranch.