17-letter words containing f, l, u, r
- spatial frequency — the measure of fine detail in an optical image in terms of cycles per millimetre
- stannous fluoride — a white, crystalline powder, SnF 2 , slightly soluble in water: used as a source of fluorine in the prevention of dental caries, especially as a toothpaste additive.
- star-of-jerusalem — meadow salsify.
- statue of liberty — a large copper statue, on Liberty Island, in New York harbor, depicting a woman holding a burning torch: designed by F. A. Bartholdi and presented to the U.S. by France; unveiled 1886.
- strike-slip fault — a geological fault on which the movement is along the strike of the fault
- sulfonyl chloride — a colorless liquid, SO 2 Cl 2 , having a very pungent odor and corrosive to the skin and mucous membranes: used as a chlorinating or sulfonating agent.
- sulfurated potash — a yellowish-brown mixture consisting mainly of potassium polysulfides and potassium thiosulfate, used in treating mange.
- sulphur butterfly — sulfur butterfly.
- tell your fortune — When someone tells your fortune, they tell you what they think will happen to you in the future, which they say is shown, for example, by the lines on your hand.
- tetrafluoroethene — a dense colourless gas that is polymerized to make polytetrafluorethene (PTFE). Formula: F2C:CF2
- the final curtain — the closing of the curtain at the end of the action of a play
- thermal diffusion — the separation of constituents, often isotopes, of a fluid under the influence of a temperature gradient.
- thiosulfuric acid — an acid, H 2 S 2 O 3 , that may be regarded as sulfuric acid with one oxygen atom replaced by sulfur.
- thistle butterfly — any nymphalid butterfly of the genus Vanessa, as the red admiral or painted lady.
- through the floor — If you say that prices or sales have fallen through the floor, you mean that they have suddenly decreased.
- to feel your oats — to feel exuberant or high-spirited
- troilus butterfly — spicebush swallowtail.
- unclassified road — a road that has not been given a grade because it is of a basic standard
- uncomfortableness — causing discomfort or distress; painful; irritating.
- unofficial strike — a strike that is not approved by the strikers' trade union
- unprofessionalism — not professional; not pertaining to or characteristic of a profession.
- vanilla-flavoured — having been flavoured with vanilla extract or essence
- vibrofluidization — Vibrofluidization is when vibration is used to make particles move in a fluidized bed.
- walleye surfperch — a common black and silvery surfperch (Hyperprosopon argenteum) found off the coast of California
- wave-cut platform — a flat surface at the base of a cliff formed by erosion by waves
- youthful offender — a young delinquent, especially a first offender, usually from 14 to 21 years old, whom the court tries to correct and guide rather than to punish as a criminal.