20-letter words containing a, p, l, e, i, s
- spherical aberration — variation in focal length of a lens or mirror from center to edge, due to its spherical shape.
- spherical coordinate — Usually, spherical coordinates. any of three coordinates used to locate a point in space by the length of its radius vector and the angles this vector makes with two perpendicular polar planes.
- spiral of archimedes — a curve that is the locus of a point that moves outward with uniform speed along a vector, beginning at the origin, while the vector rotates about the origin with uniform angular velocity. Equation (in polar coordinates): r = aθ.
- splice the mainbrace — to issue and partake of an extra allocation of alcoholic spirits
- spotted crane's-bill — the American wild geranium, Geranium maculatum.
- spread like wildfire — If something, especially news or a rumour, spreads like wildfire, it spreads extremely quickly.
- staff of aesculapius — a representation of a forked staff with an entwining serpent, used as a symbol of the medical profession and as the insignia of the American Medical Association and other medical organizations. Compare caduceus (def 2).
- state highway patrol — a state's road traffic police
- television programme — a programme broadcast on television
- the legal profession — the profession of law
- theosophical society — a society founded by Madame Blavatsky and others, in New York in 1875, advocating a worldwide eclectic religion based largely on Brahmanic and Buddhistic teachings.
- travel-sickness pill — a pill which is used to relieve the symptoms of travel or motion sickness, the condition of being nauseated from riding in a moving vehicle
- tropical disturbance — a very weak, or incipient, tropical cyclone.
- upper yosemite falls — a section of Yosemite Falls in central California, in the Yosemite National Park that is 436 m (1430 ft) high
- visually handicapped — unable to carry out normal activities because of defects of vision, including blindness
- white bush (scallop) — a variety of summer squash having a saucer-shaped white fruit, scalloped around the edges
- white elephant stall — a stall, usually at a fete or fundraising event, where unwanted possessions are sold
- winter olympic games — an international contest of winter sports, esp skiing, held every four years
- wipe the slate clean — begin afresh
- with all due respect — despite my regard for you
- working relationship — a relationship with a colleague, boss or employee