15-letter words containing a, v, i, r
- silver standard — a monetary standard or system using silver of specified weight and fineness to define the basic unit of currency.
- silviculturally — with reference to silviculture
- simian virus 40 — SV 40.
- simple interval — an interval of an octave or less.
- sinclair, clive — Clive Sinclair
- slavonian grebe — a N Eurasian or N American grebe with reddish underside and a black and gold crest; Podiceps auritus
- sled cultivator — go-devil (def 5).
- social services — organized welfare efforts carried on under professional auspices by trained personnel.
- sri-vaishnavism — a Hindu sect advocating theistic devotion as a philosophically and scripturally valid way to achieve salvation.
- starvation diet — insufficient food to stay alive
- stationary wave — standing wave.
- steak au poivre — pepper steak (def 2).
- steel engraving — a method of incising letters, designs, etc., on steel.
- strait of dover — a strait between SE England and N France, linking the English Channel with the North Sea. Width: about 32 km (20 miles)
- string variable — data on which arithmetical operations will not be performed
- superindividual — greater than the individual
- survival course — a course that teaches people how to survive in the wild and in other dangerous environments
- sylvian fissure — lateral fissure.
- the affirmative — the side in a debate that supports the proposition
- the everlasting — God
- total depravity — the Calvinist doctrine that humankind's entire nature, including its reason, is corrupt or sinful as a result of the Fall and that people are therefore completely dependent on God for regeneration.
- tracking device — an electronic security device which allows you to monitor the location of a person or object, esp a vehicle
- tractive effort — the force exerted by a locomotive or other powered vehicle on its driving wheels.
- transindividual — a single human being, as distinguished from a group.
- transitive verb — a verb accompanied by a direct object and from which a passive can be formed, as deny, rectify, elect.
- transvaal daisy — a composite plant, Gerbera jamesonii, native to southern Africa, having showy, many-rayed, variously colored flower heads.
- transverse axis — the axis of a hyperbola that passes through the two foci.
- travel sickness — nausea caused by motion
- traveling block — (in a hoisting tackle) the block hooked to and moving with the load.
- travelling wave — a wave carrying energy away from its source
- tricuspid valve — the valve, consisting of three triangular flaps of tissue between the right auricle and ventricle of the heart, that keeps blood from flowing back into the auricle.
- trivial pursuit — a board game that is based the ability to answer questions on popular culture and general knowledge
- ultraconvenient — extremely convenient
- unauthoritative — having due authority; having the sanction or weight of authority: an authoritative opinion.
- uncontroversial — of, relating to, or characteristic of controversy, or prolonged public dispute, debate, or contention; polemical: a controversial book.
- uncooperatively — in an uncooperative or unhelpful manner
- undemonstrative — not given to open exhibition or expression of emotion, especially of affection.
- uninformatively — in an uninformative manner
- universal chuck — a chuck, as on a lathe headstock, having three stepped jaws moving simultaneously for precise centering of a workpiece of any of a wide range of sizes.
- universal class — (in the theory of classes) the class that includes all other classes and is composed of all individuals composing these classes.
- universal donor — a person with blood of group O.
- universal joint — piece that couples two rotating shafts
- universal motor — a series-wound motor, of one-half horsepower or less, using alternating or direct current.
- universal stage — a small theodolite mounted on the stage of a polarizing microscope and used in the petrographic analysis of rocks.
- university park — a city in N Texas.
- unparticipative — to take or have a part or share, as with others; partake; share (usually followed by in): to participate in profits; to participate in a play.
- unrevolutionary — not revolutionary, progressive, or radical
- unverifiability — the quality or state of being unverifiable
- vacation course — a course of study undertaken during a vacation, usually combined with other activities
- vaginal dryness — abnormal dryness of the vagina, caused by lack of natural lubrication