21-letter words containing a, s, v

personality inventory — a questionnaire designed to measure personality types or characteristics.
premium savings bonds — (in Britain) bonds issued by the Treasury since 1956 for purchase by the public. No interest is paid but there is a monthly draw for cash prizes of various sums
pressure-vacuum valve — a valve for relieving a sealed tank of any pressure or vacuum exceeding acceptable limits.
private member's bill — In Britain, a Private Member's Bill is a law that is proposed by a Member of Parliament acting as an individual rather than as a member of his or her political party.
professional services — (job) A department of a supplier providing consultancy and programming manpower for the supplier's products.
progressive education — any of various reformist educational philosophies and methodologies since the late 1800s, applied especially to elementary schools, that reject the rote recitation and strict discipline of traditional, single-classroom teaching, favoring instead more stimulation of the individual pupil as well as group discussion, more informality in the classroom, a broader curriculum, and use of laboratories, gymnasiums, kitchens, etc., in the school.
public health service — the agency that is responsible for the health of the general public
quantitative analysis — Chemistry. the analysis of a substance to determine the amounts and proportions of its chemical constituents. Compare qualitative analysis.
quantitative genetics — population genetics.
radius of convergence — a positive number so related to a given power series that the power series converges for every number whose absolute value is less than this particular number.
rap over the knuckles — to reprimand
real-estate developer — a person who buys and develops houses, buildings, and land in order to sell them and make a profit from them
reverse polish syntax — postfix notation
reverse transcriptase — a retrovirus enzyme that synthesizes DNA from viral RNA, the reverse of the usual DNA-to-RNA replication: used in genetic engineering to clone genes from RNA strands.
revillagigedo islands — an uninhabited island group belonging to Mexico, in the Pacific Ocean, SSW of the Baja California peninsula: Socorro is the largest island. 320 sq. mi. (830 sq. km).
saint valentine's day — February 14, observed in honor of St. Valentine as a day for the exchange of valentines and other tokens of affection.
satisficing behaviour — the form of behaviour demonstrated by firms who seek satisfactory profits and satisfactory growth rather than maximum profits
saving your reverence — a form of apology for using an obscene or taboo expression
sentential connective — any of several words or their equivalent symbols used in logical formulas to connect propositions, as “or,” “not,” “and,” “if and only if.”.
seven-segment display — (electronics) (SSD) A kind of display element consisting of seven independently controllable lines arranged as a rectangular figure eight. A seven-segment display is the simplest device that can display any of the digits zero to nine (and some other characters) by lighting different combinations of lines. They are often seen in electronic calculators or measuring equipment.
seventeen-year locust — a cicada, Magicicada septendecim, of the eastern U.S., having nymphs that live in the soil, usually emerging in great numbers after 17 years in the North or 13 years in the South.
seventeenth amendment — an amendment to the U.S. Constitution, ratified in 1913, providing for the election of two U.S. senators from each state by popular vote and for a term of six years.
seventh day adventist — Seventh Day Adventist churches are churches that believe that Jesus Christ will return very soon, and that have Saturday as their holy day.
seventh-day adventist — See example at Seventh-Day.
short message service — (messaging) (SMS) A message service offered by the GSM digital mobile telephone system. Using SMS, a short alphanumeric message (160 alphanumeric characters) can be sent to a mobile phone to be displayed there, much like in an alphanumeric pager system. The message is buffered by the GSM network until the phone becomes active.
sieve of eratosthenes — a method of obtaining prime numbers by sifting out the composite numbers from the set of natural numbers so that only prime numbers remain.
snappy video snapshot — (hardware) (registered trademark) A frame grabber for the IBM PC designed and marketed by Play, Inc..
sovereign wealth fund — an investment fund created using the financial assets of a national government
steady state universe — a universe described by the steady state theory.
surface acoustic wave — an acoustic wave generated on the surface of a piezoelectric substrate: used as a filter in electronic circuits
surface of revolution — a surface formed by revolving a plane curve about a given line.
sympathetic vibration — a vibration induced by resonance.
take under advisement — to consider carefully
television evangelist — a Christian minister who devotes time to preaching on television
temperature inversion — inversion (def 12).
the barber of seville — Italian Il barbiere di Siviglia. a comic opera (1816) by Gioacchino Rossini based on a comedy (1775) by Beaumarchais.
the central provinces — the Canadian provinces of Ontario and Quebec
the executive mansion — the White House
the household cavalry — a group of British soldiers on horseback who have the job of protecting the king or queen and their family
the lower vertebrates — relatively simple and primitive vertebrates
the probation service — a criminal justice service that is mainly responsible for dealing with offenders by placing them under the supervision of a probation officer
throw sb a curve ball — If someone throws you a curve or throws you a curve ball, they surprise you by doing something that you do not expect.
throw someone a curve — a continuously bending line, without angles.
to have green fingers — If someone has green fingers, they are very good at gardening and their plants grow well.
to move the goalposts — If you accuse someone of moving the goalposts, you mean that they have changed the rules in a situation or an activity, in order to gain an advantage for themselves and to make things difficult for other people.
total recoverable gas — Total recoverable gas is the amount of gas which is still left in the ground in gas fields that have already been worked.
toussaint l'ouverture — François Dominique [frahn-swa dawmee-neek] /frɑ̃ˈswa dɔmiˈnik/ (Show IPA), 1743–1803, Haitian patriot and leader of the Haitian Revolution slave rebellion.
traveling salesperson — a representative of a business firm who travels in an assigned territory soliciting orders for a company's services.
turn state's evidence — If someone who is accused of a crime turns state's evidence, they agree to give evidence in a law court against another person such as a former accomplice, usually in exchange for a reduced sentence for themselves.
uk overseas territory — any of the territories that are governed by the UK but lie outside the British Isles; many were formerly British crown colonies: includes Bermuda, Falkland Islands, and Montserrat

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