12-letter words containing a, d, o
- dragon light — a herbal remedy for impotence
- dragonslayer — One who slays a dragon.
- drama school — a college which trains students (who are generally 18+) to act
- drapery shop — a shop selling fabrics and sewing materials
- drapetomania — (dated) an overwhelming urge to run away (from home, a bad situation, responsibility, etc.).
- draughtboard — checkerboard (def 1).
- draughtproof — That prevents the access of draughts.
- drawing room — a formal reception room, especially in an apartment or private house.
- dreadnoughts — Plural form of dreadnought.
- dream vision — a conventional device used in narrative verse, employed especially by medieval poets, that presents a story as told by one who falls asleep and dreams the events of the poem: Dante's Divine Comedy exemplifies the dream vision in its most developed form.
- drift anchor — a sea anchor or drag.
- drill collar — A drill collar is a thick tubular piece at the bottom of a drillpipe, which concentrates the weight on the rotating drill bit.
- dromaeosaurs — Plural form of dromaeosaur.
- drop a brick — a block of clay hardened by drying in the sun or burning in a kiln, and used for building, paving, etc.: traditionally, in the U.S., a rectangle 2.25 × 3.75 × 8 inches (5.7 × 9.5 × 20.3 cm), red, brown, or yellow in color.
- drop curtain — a curtain that is lowered into position from the flies.
- drop initial — inset initial.
- dropout rate — the percentage of students failing to complete a particular school or college course
- dropped seat — a seat of a chair or the like, having a front dished so as to be lower than the sides or back.
- droseraceous — of or relating to the genus of plants Drosera
- drug holiday — a brief period during which a patient stops taking a prescribed medication, especially an antidepressant, to recover some normal functions, reduce side effects, or maintain sensitivity to the drug.
- dry tortugas — a group of eight coral islands at the entrance to the Gulf of Mexico: part of Florida
- dual-control — having dual controls
- dual-purpose — serving two functions.
- duke of alba — Duke of, Alva, Fernando Alvarez de Toledo.
- duodecastyle — dodecastyle.
- duodecennial — relating to twelve years
- duplications — Plural form of duplication.
- dutch harbor — a U.S. naval base on Unalaska Island, in the Aleutian Islands.
- duty of care — the legal obligation to safeguard others from harm while they are in your care, using your services, or exposed to your activities
- dwarf cornel — the bunchberry.
- dwarf mallow — cheese1 (def 5).
- dynamometers — Plural form of dynamometer.
- dynamometric — Relating to dynamometry.
- dysmenorrhea — painful menstruation.
- dystopianism — a society characterized by human misery, as squalor, oppression, disease, and overcrowding.
- early modern — designating or of the period of European history from the end of the Middle Ages (c. 1450) to c. 1750
- earth almond — chufa.
- east detroit — a city in SE Michigan.
- easting down — the passage eastward from the Cape of Good Hope, as made by a sailing ship bound for Australia or the East Indies.
- easy does it — If you say 'Easy does it', you are telling someone to be careful and not to use too much effort, especially when they are moving something large and awkward.
- eavesdropped — Simple past tense and past participle of eavesdrop.
- eavesdropper — to listen secretly to a private conversation.
- ebb and flow — tidal movement
- echinodermal — (zoology) Relating or belonging to the echinoderms.
- ectrodactyly — the congenital absence of part or all of one or more fingers or toes.
- edaphosaurus — Any of several dinosaurs of the family Edaphosauridae, from the Carboniferous and Permian periods, that had a distinctive dorsal sail or crest.
- edifications — Plural form of edification.
- editorial we — we (def 6).
- editorialise — Alternative spelling of editorialize.
- editorialist — an article in a newspaper or other periodical or on a website presenting the opinion of the publisher, writer, or editor.