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Glossary · Nouns · D

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TermTypeDefinitionClassificationsUpdated
Datumnounan item of factual information derived from measurement or researchverifiedMay 18, 2026
Daubernounan unskilled painterverifiedMay 18, 2026
Daubingnounthe application of plasterverifiedMay 18, 2026
Daughternouna female human offspringverifiedMay 18, 2026
Daughter CellnounMWEa cell formed by the division or budding of another cellverifiedMay 18, 2026
Daughter-In-Lawnounthe wife of your sonverifiedMay 18, 2026
Dauntlessnessnounresolute courageousnessverifiedMay 18, 2026
Dauphinnounformerly, the eldest son of the King of France and direct heir to the throneverifiedMay 18, 2026
Davallianounany fern of the genus DavalliaverifiedMay 18, 2026
Davenportnouna large sofa usually convertible into a bedverifiedMay 18, 2026
Davitnouna crane-like device (usually one of a pair) for suspending or lowering equipment (as a lifeboat)verifiedMay 18, 2026
Dawnouncommon black-and-grey Eurasian bird noted for thieveryverifiedMay 18, 2026
Dawahnounmissionary work for IslamverifiedMay 18, 2026
Dawdlernounsomeone who takes more time than necessaryverifiedMay 18, 2026
Dawdlingnounthe deliberate act of delaying and playing instead of workingverifiedMay 18, 2026
Dawn HorsenounMWEearliest horseverifiedMay 18, 2026
Dawn RedwoodnounMWElarge fast-growing Chinese monoecious tree having flat bright-green deciduous leaves and small globular conesverifiedMay 18, 2026
Dawningnounthe first light of dayverifiedMay 18, 2026
daynounA period of time that consists of twenty-four hours.MetricMay 12, 2026
Day BlindnessnounMWEinability to see clearly in bright lightverifiedMay 18, 2026
Day BoardernounMWEa schoolchild at a boarding school who has meals at school but sleeps at homeverifiedMay 18, 2026
Day CampnounMWEa camp providing care and activities for children during the daytimeverifiedMay 18, 2026
Day Care CenternounMWEa nursery for the supervision of preschool children while the parents workverifiedMay 18, 2026
Day GamenounMWEa game played in daylightverifiedMay 18, 2026
Day JessaminenounMWEWest Indian evergreen shrub having clusters of funnel-shaped white flowers that are fragrant by dayverifiedMay 18, 2026
Day LaborernounMWEa laborer who works by the dayverifiedMay 18, 2026
Day LabourernounMWEa laborer who works by the dayverifiedMay 18, 2026
Day LilynounMWEany of numerous perennials having tuberous roots and long narrow bladelike leaves and usually yellow lily-like flowers that bloom for only a dayverifiedMay 18, 2026
Day NurserynounMWEa nursery for the supervision of preschool children while the parents workverifiedMay 18, 2026
Day of ReckoningnounMWEan unpleasant or disastrous destinyverifiedMay 18, 2026
Day of RemembrancenounMWEthe date on which an event occurred in some previous year (or the celebration of it)verifiedMay 18, 2026
Day of RestnounMWEa day set aside for restverifiedMay 18, 2026
Day of the WeeknounMWEany one of the seven days in a weekverifiedMay 18, 2026
Day OffnounMWEa day when you are not required to workverifiedMay 18, 2026
Day ReturnnounMWEa return ticket (at reduced fare) for traveling both ways in the same dayverifiedMay 18, 2026
Day SchoolnounMWEa school giving instruction during the daytimeverifiedMay 18, 2026
Day ShiftnounMWEthe work shift during the day, such as 8 a.m. to 4 p.mverifiedMay 18, 2026
Day WatchnounMWEworkers who work during the day (as 8 a.m. to 4 p.m.)verifiedMay 18, 2026
Day ZeronounMWEThe "Day Zero" or "Zero Day" is the day a new vulnerability is made known. In some cases, a "zero day" exploit is referred to an exploit for which no patch is available yet. ("day one"- day at which the patch is made available).VulnerabilityMay 9, 2026
Daybednounan armless couchverifiedMay 18, 2026
Daybooknouna ledger in which transactions have been recorded as they occurredverifiedMay 18, 2026
Dayboynouna day boarder who is a boyverifiedMay 18, 2026
Daybreaknounthe first light of dayverifiedMay 18, 2026
Daycarenounchildcare during the day while parents workverifiedMay 18, 2026
Daydreamernounsomeone who indulges in idle or absentminded daydreamingverifiedMay 18, 2026
Daydreamingnounabsentminded dreaming while awakeverifiedMay 18, 2026
Dayflowernounany plant of the family CommelinaceaeverifiedMay 18, 2026
Dayflynounslender insect with delicate membranous wings having an aquatic larval stage and terrestrial adult stage usually lasting less than two daysverifiedMay 18, 2026
Daygirlnouna day boarder who is a girlverifiedMay 18, 2026
Daylightnounthe time after sunrise and before sunset while it is light outsideverifiedMay 18, 2026
Daylight overdraftnounMWEA daylight overdraft occurs at any point in the business day when the balance in an institution's account becomes negative. Daylight overdrafts can occur in accounts at Federal Reserve Banks as well as at private financial institutions. Daylight credit can also arise in the form of net debit positions of participants in private payment systems. A daylight overdraft occurs at a Federal Reserve Bank when there are insufficient funds in an institution's Federal Reserve Bank account to cover outgoing funds transfers or incoming book-entry securities transfers. An overdraft can also be the result of other payment activity processed by the Federal Reserve Bank, such as check or automated clearinghouse transactions.EventRegulatedMay 12, 2026
Daylight SavingnounMWEtime during which clocks are set one hour ahead of local standard timeverifiedMay 18, 2026
Daylight VisionnounMWEnormal vision in daylightverifiedMay 18, 2026
Daylight-Saving TimenounMWEtime during which clocks are set one hour ahead of local standard timeverifiedMay 18, 2026
Daylight-Savings TimenounMWEtime during which clocks are set one hour ahead of local standard timeverifiedMay 18, 2026
Dayspringnounthe first light of dayverifiedMay 18, 2026
Daystarnouna planet, usually Venus, seen just before sunrise in the eastern skyverifiedMay 18, 2026
Daytimenounthe time after sunrise and before sunset while it is light outsideverifiedMay 18, 2026
Dbnouna logarithmic unit of sound intensityverifiedMay 18, 2026
DCnounan electric current that flows in one direction steadilyverifiedMay 18, 2026
Ddcnounan antiviral drug used to combat HIV infectionverifiedMay 18, 2026
Ddinounan antiviral drug used to combat HIV infectionverifiedMay 18, 2026
De Facto SegregationnounMWEsegregation (especially in schools) that happens in fact although not required by lawverifiedMay 18, 2026
De Jure SegregationnounMWEsegregation that is imposed by lawverifiedMay 18, 2026
De ValeranounMWEIrish statesman (born in the United States)verifiedMay 18, 2026
De-Escalationnoun(war) a reduction in intensity (of a crisis or a war)verifiedMay 18, 2026
De-Iodinasenounan enzyme that removes the iodine radicalverifiedMay 18, 2026
De-Iodinationnounthe removal of iodine atoms from organic compoundsverifiedMay 18, 2026
Deaconnouna cleric ranking just below a priest in Christian churchesverifiedMay 18, 2026
Deaconessnouna woman deaconverifiedMay 18, 2026
Deactivationnounthe act of deactivating or making ineffective (as a bomb)verifiedMay 18, 2026
Dead AirnounMWEan inadvertent interruption in a broadcast during which there is no soundverifiedMay 18, 2026
Dead AxlenounMWEan axle that carries a wheel but without power to drive itverifiedMay 18, 2026
Dead BodynounMWEa natural object consisting of a dead animal or personverifiedMay 18, 2026
Dead CenternounMWEthe position of a crank when it is in line with the connecting rod and not exerting torqueverifiedMay 18, 2026
Dead CentrenounMWEthe position of a crank when it is in line with the connecting rod and not exerting torqueverifiedMay 18, 2026
Dead DropnounMWEa drop used for the clandestine exchange of intelligence informationverifiedMay 18, 2026
Dead DucknounMWEsomething doomed to failureverifiedMay 18, 2026
Dead EndnounMWEa situation in which no progress can be made or no advancement is possibleverifiedMay 18, 2026
Dead HandnounMWEreal property held inalienably (as by an ecclesiastical corporation)verifiedMay 18, 2026
Dead Hand of the PastnounMWEthe oppressive influence of past events or decisionsverifiedMay 18, 2026
Dead HeatnounMWEa tie in a raceverifiedMay 18, 2026
Dead LanguagenounMWEa language that is no longer learned as a native languageverifiedMay 18, 2026
Dead LetternounMWEthe state of something that has outlived its relevanceverifiedMay 18, 2026
Dead LoadnounMWEa constant load on a structure (e.g. a bridge) due to the weight of the supported structure itselfverifiedMay 18, 2026
Dead MailnounMWEmail that can neither be delivered nor returnedverifiedMay 18, 2026
Dead MarchnounMWEa slow march to be played for funeral processionsverifiedMay 18, 2026
Dead MetaphornounMWEa metaphor that has occurred so often that it has become a new meaning of the expression (e.g., `he is a snake' may once have been a metaphor but after years of use it has died and become a new sense of the word `snake')verifiedMay 18, 2026
Dead NettlenounMWEa plants of the genus Pilea having drooping green flower clusters and smooth translucent stems and leavesverifiedMay 18, 2026
Dead PersonnounMWEsomeone who is no longer aliveverifiedMay 18, 2026
Dead ReckoningnounMWEnavigation without the aid of celestial observationsverifiedMay 18, 2026
Dead RingernounMWEa person who is almost identical to anotherverifiedMay 18, 2026
Dead RoomnounMWEa building or room where dead bodies are kept before burial or cremationverifiedMay 18, 2026
Dead SoulnounMWEsomeone who is no longer aliveverifiedMay 18, 2026
Dead WeightnounMWEa heavy motionless weightverifiedMay 18, 2026
Dead-Air SpacenounMWEan unventilated area where no air circulatesverifiedMay 18, 2026
Dead-End StreetnounMWE(metaphorical) a situation with no options for moving forwardverifiedMay 18, 2026
Dead-Man's FloatnounMWEa floating position with the face down and arms stretched forwardverifiedMay 18, 2026
Dead-Man's-Fingersnounthe fruiting bodies of the fungi of the genus XylariaverifiedMay 18, 2026
Dead-Men's-Fingersnounthe fruiting bodies of the fungi of the genus XylariaverifiedMay 18, 2026