13-letter words containing a, u, t, o
- double batten — two wooden battens screwed together for holding the edge of a drop between them.
- double tackle — a pulley system using blocks having two grooved wheels.
- double-acting — (of a reciprocating engine, pump, etc.) having pistons accomplishing work in both directions, fluid being admitted alternately to opposite ends of the cylinders. Compare single-acting.
- double-action — (of a firearm) requiring only one pull of the trigger to cock and fire it.
- double-tailed — (of a lion) represented with two tails joined together next to the body.
- downregulates — Third-person singular simple present indicative form of downregulate.
- 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.
- dual controls — If a vehicle used by a driving instructor has dual controls, it has pedals on the passenger's side as well as on the driver's side to allow the driving instructor to brake should the learner try to move off when it is dangerous to do so
- dual national — a person that has dual nationality
- dutch auction — a method of auction consisting in the offer of a property at a price above the actual value and then at gradually reduced prices until a buyer is found.
- dutch courage — courage inspired by drunkenness or drinking liquor.
- dysfunctional — not performing normally, as an organ or structure of the body; malfunctioning.
- dysregulation — A failure to regulate properly.
- east by south — a point on the compass 11°15prime; south of east. Abbreviation: EbS.
- educationally — pertaining to education.
- educationists — Plural form of educationist.
- emphysematous — (medicine) Related, similar to or involving emphysema; swollen, bloated.
- encapsulation — The act of enclosing in a capsule; the growth of a membrane around (any part) so as to enclose it in a capsule.
- encouragement — The action of giving someone support, confidence, or hope.
- encrustations — Plural form of encrustation.
- enculturation — The gradual acquisition of the characteristics and norms of a culture or group by a person, another culture, etc.
- endeavourment — the act of endeavouring
- entomophagous — feeding mainly on insects; insectivorous
- equilibration — The formation, or maintenance, of an equilibrium.
- equilibratory — Relating to the physical sense of balance, or equilibrium.
- equinoctially — In an equinoctial manner; relative to the equinox.
- equipartition — the equal division of the energy of a system in thermal equilibrium between different degrees of freedom. This principle was assumed to be exact in classical physics, but quantum theory shows that it is true only in certain special cases
- equiponderant — of the same weight; evenly balanced
- equiponderate — To counterbalance.
- equipotential — (of a surface or line ) composed of points all at the same potential.
- equisetaceous — belonging to the family Equisetaceae
- equivocations — Plural form of equivocation.
- erythematosus — (pathology) An eruption of red lesions.
- eta reduction — eta conversion
- ethnocultural — Relating to or denoting a particular ethnic group.
- ethnophaulism — An ethnic or racial slur, typically caricaturing some identifiable (often physical) feature of the group being derided. For example,
- eudaemonistic — Of or pertaining to eudaemonism.
- eureka moment — a moment at which a person realizes or solves something
- european toad — a European toad, Alytes obstetricans, the male of which carries the fertilized eggs on its hind legs until they hatch: family Discoglossidae
- eusporangiate — (of ferns) having each sporangium developing from a group of cells, rather than a single cell, and with no specialized dispersal of spores
- euthanisation — Alternative spelling of euthanization.
- euthanization — The act or process of euthanizing.
- exanthematous — Of or pertaining to exanthem.
- excommunicate — Officially exclude (someone) from participation in the sacraments and services of the Christian Church.
- exploratorium — A museum or similar institution that encourages visitors to explore the exhibits in a hands-on manner.
- expostulating — Present participle of expostulate.
- expostulation — (countable) The act of reasoning earnestly in order to dissuade or remonstrate.
- expostulatory — Of, characterized by, or exhibiting expostulation.