18-letter words containing f, n, t, u, e, l
- relative frequency — the ratio of the number of times an event occurs to the number of occasions on which it might occur in the same period.
- return to the fold — come back home
- return-flue boiler — a fire-tube boiler having flues that collect the combustion gases at the end of the boiler opposite the fire door and pass them through the boiler to an uptake above the fire door.
- rule of engagement — a directive issued by a military authority controlling the use and degree of force, especially specifying circumstances and limitations for engaging in combat.
- safety regulations — regulations or rules that are put in place to ensure a product, event, etc, is safe and not dangerous
- selenium rectifier — a rectifier consisting of laminated plates of metal, usually iron, that have been coated with selenium on one side, with rectification taking place because the flow of electrons from the conductive metal to the selenium occurs more readily than the flow in the opposite direction.
- self-actualization — the achievement of one's full potential through creativity, independence, spontaneity, and a grasp of the real world.
- self-extinguishing — to put out (a fire, light, etc.); put out the flame of (something burning or lighted): to extinguish a candle.
- self-instructional — pertaining to or constituting learning materials and conditions arranged so that students can proceed to learn on their own with little or no supervision.
- self-justification — the act or fact of justifying oneself, especially of offering excessive reasons, explanations, excuses, etc., for an act, thought, or the like.
- self-preoccupation — the state of being preoccupied.
- self-understanding — mental process of a person who comprehends; comprehension; personal interpretation: My understanding of the word does not agree with yours.
- slip of the tongue — If you describe something you said as a slip of the tongue, you mean that you said it by mistake.
- soft touch sealing — Soft touch sealing is a copolymer seal for a tank, with characteristics designed for softness, used instead of a metal seal to help avoid fire when sparks are generated.
- soldier of fortune — a person who independently seeks pleasure, wealth, etc., through adventurous exploits.
- solid-fuel heating — heating that uses solid fuel, such as coal or coke
- sutton-in-ashfield — a market town in N central England, in W Nottinghamshire. Pop: 41 951 (2001)
- the final solution — the code name used by the Nazis to refer to the plan of mass murder of the Jews
- the full treatment — If you say that someone is given the full treatment, you mean either that they are treated extremely well or that they are treated extremely severely.
- 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.
- turn in on oneself — to withdraw or cause to withdraw from contact with others and become preoccupied with one's own problems
- ultralow frequency — an electromagnetic wave with a frequency between 300 and 3000 hertz. Abbreviation: ULF, ulf.
- university faculty — a division within a university comprising one subject area, or a number of related subject areas
- uriniferous tubule — a urine-bearing tubule in a nephron of a kidney.
- wildlife sanctuary — an area where wild animals and plants are protected