19-letter words containing d, e, f, o, r, s
- norfolk island pine — a coniferous evergreen tree, Araucaria heterophylla (or A. excelsa), having whorled branches and needlelike foliage, widely cultivated as a houseplant.
- of one's own accord — to be in agreement or harmony; agree.
- on the threshold of — If you are on the threshold of something exciting or new, you are about to experience it.
- peroxysulfuric acid — persulfuric acid (def 1).
- persistent offender — a person who repeatedly breaks the law
- plastic deformation — In plastic deformation a material changes shape when a stress is applied to it and does not go back to its original state when the stress is removed.
- post-and-rail fence — a fence constructed of upright wooden posts with horizontal timber slotted through it
- professional advice — advice given by someone trained in a particular and relevant profession or job
- pseudo-professional — following an occupation as a means of livelihood or for gain: a professional builder.
- radius of curvature — the absolute value of the reciprocal of the curvature at a point on a curve.
- san fernando valley — valley in SW Calif., partly in NW Los Angeles: c. 260 sq mi (673 sq km)
- sea floor spreading — a process in which new ocean floor is created as molten material from the earth's mantle rises in margins between plates or ridges and spreads out.
- sea-floor spreading — a process in which new ocean floor is created as molten material from the earth's mantle rises in margins between plates or ridges and spreads out.
- secondary infection — an infection resulting from another infection
- self-administration — the management of any office, business, or organization; direction.
- self-discrimination — an act or instance of discriminating, or of making a distinction.
- sheet flood erosion — Geology. erosion by sheets of running water, rather than by streams.
- sodium hydrosulfite — a white, crystalline, water-soluble powder, Na 2 S 2 O 4 , used as a reducing agent, especially in dyeing, and as a bleach.
- soft-shelled turtle — any of numerous aquatic turtles of the family Trionychidae, inhabiting North America, Asia, and Africa, having the shell covered with flexible, leathery skin instead of horny plates.
- solid of revolution — a three-dimensional figure formed by revolving a plane area about a given axis.
- spread oneself thin — to draw, stretch, or open out, especially over a flat surface, as something rolled or folded (often followed by out).
- staff-student ratio — the ratio of teachers to pupils or students in a school, college, or university
- stanford university — (education) A University in the city of Palo Alto, California, noted for work in computing, especially artificial intelligence. See SAIL.
- stanford-binet test — a revised version of the Binet-Simon scale, prepared at Stanford University for use in the U.S.
- straightforwardness — going or directed straight ahead: a straightforward gaze.
- sulfureted hydrogen — hydrogen sulfide.
- superannuation fund — a fund used for paying pensions
- the best of friends — If two people are the best of friends, they are close friends, especially when they have had a disagreement or fight in the past.
- tricks of the trade — expert techniques
- under the shadow of — in danger of; apparently fated for
- venus of willendorf — a village in NE Austria, near Krems: site of an Aurignacian settlement where a 4½ inches (11 cm) limestone statuette (Venus of Willendorf) was found.
- white-fronted goose — a grayish-brown wild goose, Anser albifrons, of Eurasia and western North America, having a white patch on the front of the face.
- whorled loosestrife — any of various plants belonging to the genus Lysimachia, of the primrose family, having clusters of usually yellow flowers, as L. vulgaris (garden loosestrife) or L. quadrifolia (whorled loosestrife)
- yesterday afternoon — during the afternoon of the day preceding today