12-letter words containing a, u, d
- gutturalized — pronounced with guttural coarticulation.
- gypsum board — wallboard composed primarily of gypsum and often used as sheathing.
- hadrosaurine — Hadrosaurid.
- hallucinated — Simple past tense and past participle of hallucinate.
- hand luggage — carry-on baggage
- hand-launder — hand-wash.
- hand-running — in unbroken succession; consecutively.
- happy medium — a course of action or condition that is between two extremes: Our climate is a happy medium between hot and cold.
- harbour dues — the fees or charges paid for using a harbour
- hard-mouthed — of or relating to a horse not sensitive to the pressure of a bit.
- hard-surface — to make the surface of (something) hard or firm, as by compacting or paving it: to hard-surface a parking area.
- hardy annual — a plant that can withstand freezing temperatures and which completes its life cycle within a year
- harlequinade — a pantomime, farce, or similar play in which Harlequin plays the principal part.
- head lettuce — any variety of the lettuce subspecies Lactuca sativa capitata, having leaves that grow in a dense rosette, especially iceberg lettuce and Boston lettuce.
- head-hunting — a headhunting expedition: The men left the village to go on a headhunt.
- headquarters — a center of operations, as of the police or a business, from which orders are issued; the chief administrative office of an organization: The operatives were always in touch with headquarters.
- hepadnavirus — Any member of the virus family Hepadnaviridae, capable of causing liver infections in humans and animals.
- hexafluoride — a fluoride containing six atoms of fluorine.
- hindquarters — the posterior end of a halved carcass of beef, lamb, etc., sectioned usually between the twelfth and thirteenth ribs.
- homodynamous — (biology) Pertaining to, or involving, homodynamy.
- horse around — a large, solid-hoofed, herbivorous quadruped, Equus caballus, domesticated since prehistoric times, bred in a number of varieties, and used for carrying or pulling loads, for riding, and for racing.
- horse guards — the mounted squadrons supplied by the Household Cavalry for ceremonial duties
- house wizard — (Probably from ad-agency tradetalk, "house freak") A hacker occupying a technical-specialist, R&D, or systems position at a commercial shop. A really effective house wizard can have influence out of all proportion to his/her ostensible rank and still not have to wear a suit. Used especially of Unix wizards. The term "house guru" is equivalent.
- househusband — a man whose spouse works and who stays home to manage their household.
- housetrained — Simple past tense and past participle of housetrain.
- how dare you — You say 'how dare you' when you are very shocked and angry about something that someone has done.
- huffman code — Huffman coding
- human comedy — French La Comédie Humaine. a collected edition of tales and novels in 17 volumes (1842–48) by Honoré de Balzac.
- human shield — a person or group of people located or intentionally placed in a potential line of fire or in an area likely to be attacked.
- humboldt bay — an inlet of the Pacific Ocean in NW California.
- hundred days — the period from March 20 to June 28, 1815, between the arrival of Napoleon in Paris, after his escape from Elba, and his abdication after the battle of Waterloo.
- hydraulicked — (of an extracted mineral) excavated using water
- hydromedusae — Irregular plural form of hydromedusa.
- hydronautics — (nautical) The science of the design and construction of ships, their engines, and their instrumentation.
- hydrosulfate — a salt formed by the direct union of sulfuric acid with an organic base, especially an alkaloid, and usually more soluble than the base.
- ibizan hound — one of a breed of medium-sized, tall, swift hunting hounds with a short, usually red and white coat, bred originally by the Pharaohs of ancient Egypt but today found chiefly in the Balearic Islands and other areas of Spain.
- idolatrously — In an idolatrous manner.
- ill-favoured — unpleasant in appearance; homely or ugly.
- in duplicate — in two copies, times two
- in spadefuls — in an extreme or emphatic way
- in-and-outer — a person who is by turns in and out of a particular situation, condition, venture, investment, etc.
- inadequacies — Plural form of inadequacy.
- inadequately — not adequate or sufficient; inept or unsuitable.
- inaudibility — not audible; incapable of being heard.
- incapsulated — Simple past tense and past participle of incapsulate.
- india rubber — rubber1 (def 1).
- indisputable — not disputable or deniable; uncontestable. indisputable evidence.
- indisputably — not disputable or deniable; uncontestable. indisputable evidence.
- individual's — a single human being, as distinguished from a group.
- individually — one at a time; separately: The delegates were introduced individually.