19-letter words containing a, c, t, u, r
- secondary qualities — one of the qualities attributed by the mind to an object perceived, such as color, temperature, or taste.
- secondary structure — the arrangement of a polypeptide into a regular alpha helix, beta structure, or random coil configuration by the formation of intramolecular hydrogen bonds along the length of the chain.
- seleucia tracheotis — an ancient city in SE Asia Minor, on the River Calycadnus (modern Goksu Nehri): captured by the Turks in the 13th century; site of present-day Silifke (Turkey)
- self-congratulating — the expression or feeling of uncritical satisfaction with oneself or one's own accomplishment, good fortune, etc.; complacency.
- self-congratulation — the expression or feeling of uncritical satisfaction with oneself or one's own accomplishment, good fortune, etc.; complacency.
- self-congratulatory — the expression or feeling of uncritical satisfaction with oneself or one's own accomplishment, good fortune, etc.; complacency.
- semiconductor laser — a laser in which a semiconductor is the light-emitting source, used in many medical procedures.
- senatorial courtesy — the practice in the U.S. Senate of confirming only those presidential appointees approved by both senators from the state of the appointee, or by the senior senator of the president's party.
- sexual inter-course — genital contact, especially the insertion of the penis into the vagina followed by orgasm; coitus; copulation.
- sexual reproduction — reproduction involving the union of gametes.
- significant figures — the figures of a number that express a magnitude to a specified degree of accuracy, rounding up or down the final figure
- sissinghurst castle — a restored Elizabethan mansion near Cranbrook in Kent: noted for the gardens laid out in the 1930s by Victoria Sackville-West and Harold Nicolson
- slate-colored junco — the eastern subspecies of the dark-eyed junco, Junco hyemalis, having grayer plumage than the several western subspecies.
- slugging percentage — a number expressing a player's average effectiveness in making extra-base hits, calculated by dividing the total number of bases (from all singles, doubles, triples, and home runs) by the number of official at bats
- smokestack industry — A smokestack industry is a traditional industry such as heavy engineering or manufacturing, rather than a modern industry such as electronics.
- social security act — a law passed in 1935 providing old-age retirement insurance, a federal-state program of unemployment compensation, and federal grants for state welfare programs.
- south african dutch — the Boers.
- south san francisco — a city in central California.
- southern crab apple — a tree, Malus angustifolia, of the eastern U.S., having oblong leaves, fragrant, pink or rose-colored flowers, and small, round, yellow-green fruit.
- specular reflection — Specular reflection is reflection of heat or light in which the angles of different parts of the surface are important.
- stationery cupboard — a cupboard where things like paper, pens and paper clips are kept
- structural engineer — A structural engineer is an engineer who works on large structures such as roads, bridges, and large buildings.
- subminiature camera — a very small, palm-sized still camera for taking photographs on 16-millimeter or similar film.
- subnuclear particle — any of the elementary particles, including those that do not exist in stable matter but appear as a result of high-energy collisions of other particles or nuclei.
- subsistence farming — farming whose products are intended to provide for the basic needs of the farmer, with little surplus for marketing.
- subtractive process — a process of color photography in which the colors are formed by combination of cyan, yellow, and magenta lights.
- supercritical fluid — A supercritical fluid is a fluid at a temperature and pressure at which there is no difference between liquid and gas.
- surface effect ship — a large, ship-size air cushion vehicle operated over water.
- take one's cue from — If you take your cue from someone or something, you do something similar in a particular situation.
- tanizaki jun-ichiro — 1886–1965, Japanese novelist, whose works, such as Some Prefer Nettles (1929) and The Makioka Sisters (1943–48), reflect the tension between Western values and Japanese traditions
- teacher-pupil ratio — the number of teachers relative to the number of pupils in a particular school
- telescopic umbrella — an umbrella having parts that telescope
- term life insurance — life insurance for which premiums are paid over a limited time and that covers a specific term, the face value payable only if death occurs within that term.
- the channel country — an area of E central Australia, in SW Queensland: crossed by intermittent rivers and subject to both flooding and long periods of drought
- the cultural cringe — subservience to overseas cultural standards
- the genuine article — If you describe something as the genuine article, you are emphasizing that it is genuine, and often that it is very good.
- theatrical producer — a person who is responsible for all aspects of a theatrical production
- theological virtues — one of the three graces: faith, hope, or charity, infused into the human intellect and will by a special grace of God.
- therapeutic cloning — the permitted creation of cloned human tissues for surgical transplant
- three-martini lunch — an expensive lunch enjoyed by businessmen during the workday which is often accompanied by drinking
- to bury the hatchet — If two people bury the hatchet, they become friendly again after a quarrel or disagreement.
- to change your mind — If you change your mind, or if someone or something changes your mind, you change a decision you have made or an opinion that you had.
- to change your tune — If you say that someone has changed their tune, you are criticizing them because they have changed their opinion or way of doing things.
- to clutch at straws — If you are clutching at straws or grasping at straws, you are trying unusual or extreme ideas or methods because other ideas or methods have failed.
- to rack your brains — If you rack your brains, you try very hard to think of something.
- torricellian vacuum — the vacuum at the top of a Torricellian tube
- traffic regulations — rules designed to expedite the flow of traffic and prevent collisions
- training instructor — a person who teaches people the skills they need for a particular field or profession
- transference number — that fraction of the total electric current that anions and cations carry in passing through an electrolytic solution.
- transuranic element — any element having an atomic number greater than 92, the atomic number of uranium. All such elements are radioactive and can be synthesized by bombarding a heavy element with a light particle or element. See also transactinide element.