18-letter words containing t, o, p, f
- product life cycle — the four stages (introduction, growth, maturity, and decline) into one of which the sales of a product fall during its market life
- programme of study — the prescribed syllabus that pupils must be taught at each key stage in the National Curriculum
- protein deficiency — a lack or insuffiency of protein
- provably difficult — The set or property of problems for which it can be proven that no polynomial-time algorithm exists, only exponential-time algorithms.
- purple loosestrife — an Old World plant, Lythrum salicaria, of the loosestrife family, widely naturalized in North America, growing in wet places and having spikes of reddish-purple flowers.
- put a bold face on — to seem bold or confident about
- put one in mind of — to remind (one) of
- put your foot down — If someone puts their foot down, they use their authority in order to stop something happening.
- rabbit-proof fence — a fence through which rabbits are unable to pass
- reinforced plastic — plastic with fibrous matter, such as carbon fibre, embedded in it to confer additional strength
- repeat performance — sth done again
- reproduction proof — repro proof.
- safety-deposit box — a lockable metal box or drawer, especially in a bank vault, used for safely storing valuable papers, jewelry, etc.
- salt of phosphorus — a colorless, odorless, crystalline, water-soluble solid, NaNH 4 HPO 4 ⋅4H 2 O, originally obtained from human urine: used as a blowpipe flux in testing metallic oxides.
- self-contemplation — the act or process of thinking about oneself or one's values, beliefs, behavior, etc.
- self-preoccupation — the state of being preoccupied.
- shatterproof glass — glass designed to resist shattering
- shoot from the hip — the act of shooting with a bow, firearm, etc.
- slip of the tongue — If you describe something you said as a slip of the tongue, you mean that you said it by mistake.
- sodium hyposulfite — sodium thiosulfate.
- software backplane — (programming, tool) A CASE framework from Atherton.
- sonic depth finder — a sonar instrument that uses echolocation to measure depths under water.
- specific viscosity — a measure of the resistance to flow of a fluid, expressed as the ratio of the absolute viscosity of the fluid to that of a reference fluid (usually water in the case of liquids)
- spectrofluorimeter — an instrument in which the spectrum of secondarily emitted fluorescent light is used to identify chemical compounds.
- spectrofluorometer — an instrument in which the spectrum of secondarily emitted fluorescent light is used to identify chemical compounds.
- spirits of ammonia — a 10% solution of ammonia in alcohol
- spotted flycatcher — a European woodland songbird, Muscicapa striata, with a greyish-brown streaked plumage: family Muscicapidae (Old World flycatchers)
- spur-of-the-moment — occurring or done without advance preparation or deliberation; extemporaneous; unplanned: a spur-of-the-moment decision.
- stepping-off place — jumping-off place (def 2).
- take the wraps off — to reveal
- territory of papua — a former territory of Australia, consisting of SE New Guinea and adjacent islands: now part of Papua New Guinea
- the better part of — a large part of
- the family compact — the ruling oligarchy in Upper Canada in the early 19th century
- tip of the iceberg — a large floating mass of ice, detached from a glacier and carried out to sea.
- to fall into place — If things fall into place, events happen naturally to produce a situation you want.
- to play favourites — to display favouritism
- to plough a furrow — If you say that someone ploughs a particular furrow or ploughs their own furrow, you mean that their activities or interests are different or isolated from those of other people.
- to pull a fast one — If you say that someone has pulled a fast one on you, you mean that they have cheated or tricked you.
- torsion-free group — a group in which every element other than the identity has infinite order.
- unfair competition — acts done by a seller to confuse or deceive the public with intent to acquire a larger portion of the market, as by cutting prices below cost, misleading advertising, selling a spurious product under a false identity, etc.
- visiting professor — a professor from another institution invited to teach at a university or college for a limited period, usually for a semester or one academic year.