18-letter words containing a, c, u, s, l, i
- quality of service — (communications, networking) (QoS) The performance properties of a network service, possibly including throughput, transit delay, priority. Some protocols allow packets or streams to include QoS requirements.
- quarterlife crisis — a crisis that may be experienced in one's twenties, involving anxiety over the direction and quality of one's life
- quasi-metaphysical — pertaining to or of the nature of metaphysics.
- restrictive clause — a relative clause that identifies the antecedent and that is usually not set off by commas in English. In The year that just ended was bad for crops, the clause that just ended is a restrictive clause.
- resurrection plant — a desert plant, Selaginella lepidophylla, occurring from Texas to South America, having stems that curl inward when dry.
- sampling frequency — sample rate
- schwarz inequality — Also called Cauchy's inequality. the theorem that the inner product of two vectors is less than or equal to the product of the magnitudes of the vectors.
- scripting language — a language that is used to write scripts, or executable sections of code that automate tasks.
- secular tertiaries — of the third order, rank, stage, formation, etc.; third.
- securities analyst — an expert who advises on investment in securities such as stocks, shares and bonds
- security clearance — access to top secret information
- self-actualization — the achievement of one's full potential through creativity, independence, spontaneity, and a grasp of the real world.
- 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.
- semicircular canal — any of the three curved tubular canals in the labyrinth of the ear, associated with the sense of equilibrium.
- sexual intercourse — genital contact, especially the insertion of the penis into the vagina followed by orgasm; coitus; copulation.
- sit up like jackie — to sit bolt upright, esp cheekily
- small claims court — a special court established to handle small claims or debts, usually without the services of lawyers.
- small-claims court — a special court established to handle small claims or debts, usually without the services of lawyers.
- 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.
- spackling compound — spackle
- special prosecutor — (formerly) an independent counsel.
- status epilepticus — a condition in which repeated epileptic seizures occur without the patient gaining consciousness between them. If untreated for a prolonged period it can lead to long-term disability or death
- sub-classification — to arrange in subclasses.
- subatomic particle — physics:
- subordinate clause — a clause that modifies the principal clause or some part of it or that serves a noun function in the principal clause, as when she arrived in the sentence I was there when she arrived or that she has arrived in the sentence I doubt that she has arrived.
- sulfuric anhydride — sulfur trioxide.
- superciliary ridge — browridge.
- surgical appliance — a specialized device used by somebody to relieve a particular medical condition
- survival mechanism — something you or your body does automatically, in order to survive in a dangerous or unpleasant situation
- telecommunications — Sometimes, telecommunication. (used with a singular verb) the transmission of information, as words, sounds, or images, usually over great distances, in the form of electromagnetic signals, as by telegraph, telephone, radio, or television.
- the south atlantic — the part of the Atlantic Ocean that lies to the south of the equator
- thiosulphuric acid — an unstable acid known only in solutions and in the form of its salts. Formula: H2S2O3
- ulcerative colitis — chronic ulceration in the large intestine, characterized by painful abdominal cramps and profuse diarrhea containing pus, blood, and mucus.
- ultrasonic testing — the scanning of material with an ultrasonic beam, during which reflections from faults in the material can be detected: a powerful nondestructive test method
- ultrasonic welding — the use of high-energy vibration of ultrasonic frequency to produce a weld between two components which are held in close contact
- unconstitutionally — not constitutional; unauthorized by or inconsistent with the constitution, as of a country.
- unenthusiastically — full of or characterized by enthusiasm; ardent: He seems very enthusiastic about his role in the play.
- universal coupling — a coupling between rotating shafts set at an angle to one another, allowing for rotation in three planes.
- university faculty — a division within a university comprising one subject area, or a number of related subject areas
- upper middle class — wealthy, highly-educated people
- venture capitalist — funds invested or available for investment in a new or unproven business enterprise.
- video surveillance — a system of monitoring activity in an area or building using a television system in which signals are transmitted from a television camera to the receivers by cables or telephone links forming a closed circuit
- wheelchair housing — housing designed or adapted for a chairbound person
- wildlife sanctuary — an area where wild animals and plants are protected
- yeast nucleic acid — RNA.