12-letter words containing a, d, o
- don giovanni — an opera (1787) by Wolfgang Amadeus Mozart.
- don't ask me — You reply 'don't ask me' when you do not know the answer to a question, usually when you are annoyed or surprised that you have been asked.
- donald budge — (John) Donald, 1915–2000, U.S. tennis player.
- donald knuth — (person) Donald E. Knuth, the author of the TeX document formatting system, Metafont its font-design program and the 3 volume computer science "Bible" of algorithms, "The Art of Computer Programming". Knuth suggested the name "Backus-Naur Form" and was also involved in the SOL simulation language, and developed the WEB literate programming system. See also MIX, Turingol.
- donationware — (Internet) A variant of freeware that offers an option to its user to donate money to the program's author.
- donatistical — relating to a Donatist or Donatism
- donets basin — a river rising in the SW Russian Federation near Belgorod, flowing SE through Ukraine to the Don River. About 650 miles (1045 km) long.
- doodly-squat — a minimum amount or degree; the least bit (usually used in the negative): This coin collection isn't worth doodly-squat in today's market.
- doomwatching — the act of watching the environment to warn of and prevent harm
- door curtain — a curtain that fills a doorway
- door scraper — a small horizontal bar fixed to the ground near a door where visitors can scrape mud from their shoes before entering
- dopaminergic — activated by or sensitive to dopamine.
- doppelganger — a ghostly double or counterpart of a living person.
- doppleganger — Misspelling of doppelganger.
- dorothea dix — Dorothea Lynde [lind] /lɪnd/ (Show IPA), (Dorothy) 1802–87, U.S. educator and social reformer.
- dorsiventral — Botany. having distinct dorsal and ventral sides, as most foliage leaves.
- dorsolateral — of, relating to, or affecting the back and the side.
- dorsoventral — Zoology. pertaining to the dorsal and ventral aspects of the body; extending from the dorsal to the ventral side: the dorsoventral axis.
- dot notation — (networking) Berkeley Unix notation for an Internet address, consisting of one to four numbers (a "dotted quad") in hexadecimal (leading 0x), octal (leading 0), or (usually) decimal. It represents a 32-bit address. Each leading number represents eight bits of the address (high byte first) and the last number represents the rest. E.g. address 0x25.32.0xab represents 0x252000ab. By far the most common form is four decimal numbers, e.g. 146.169.22.42. Many programs accept an address in dot notation in place of a hostname.
- double agent — a person who spies on a country while pretending to spy for it.
- double album — a commercial recording sold on two CDs or LPs
- double altar — an altar on which the Eucharist may be celebrated from either the liturgical east or the liturgical west side.
- double cream — (in France) a fresh, soft cheese with at least 60 percent fat, made from cow's milk enriched with cream.
- double eagle — a gold coin of the U.S., issued from 1849 to 1933, equal to 2 eagles or 20 dollars.
- double fault — (in tennis, squash, handball, etc.) two faults in succession, resulting in the loss of the point, the loss of the serve, or both.
- double major — a major with concentration in two separate fields of study
- double modal — a syntactic construction in which two modal auxiliaries occur consecutively within a clause, as might could in I might could help you.
- double sharp — a symbol (× or ) that raises by two semitones the pitch of the following note.
- double steal — a play in which two base runners steal a base each.
- double sugar — disaccharide.
- double track — two railways side by side, typically for traffic in two directions
- double-faced — practicing duplicity; hypocritical.
- double-glaze — If someone double-glazes a house or its windows, they fit windows that have two layers of glass which keeps the inside of the house warmer and quieter.
- double-space — to type (text, copy, etc.) leaving a full space between lines: Always double-space a term paper.
- doubleganger — doppelgänger.
- doubleheader — 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.
- douglas hurd — a third-class university degree
- douglas-home — Alexander Frederick (Baron Home of the Hirsel) 1903–1995, British statesman and politician: prime minister 1963–64.
- dovetail saw — a backsaw for fine woodworking, as dovetailing.
- down and out — downward; going or directed downward: the down escalator.
- down payment — an initial amount paid at the time of purchase, in installment buying, time sales, etc.
- down-and-out — without any money, or means of support, or prospects; destitute; penniless.
- down-at-heel — of a shabby, run-down appearance; seedy: He is rapidly becoming a down-at-heel drifter and a drunk.
- down-hearted — dejected; depressed; discouraged.
- downcastness — The quality of being downcast.
- downloadable — Capable of being downloaded.
- downregulate — To decrease the number of cell receptors by using downregulation.
- draconically — (often lowercase) Draconian.
- draft dodger — a person who evades or attempts to evade compulsory military service.
- draftsperson — a person employed in making mechanical drawings, especially in an architectural or engineering firm.