15-letter words containing a, v, n, i
- reversing falls — a series of rapids in the Saint John River, New Brunswick, Canada, the flow of which regularly reverses itself owing to the force an incoming tide
- reviewing stand — A reviewing stand is a special raised platform from which military and political leaders watch military parades.
- revisualization — the act of visualizing or picturing something again
- revolutionarily — of, pertaining to, characterized by, or of the nature of a revolution, or a sudden, complete, or marked change: a revolutionary junta.
- revolving stage — a circular platform divided into segments enabling multiple theater sets to be put in place in advance and in turn rotated into view of the audience.
- rhesus negative — relating to blood not containing Rhesus antigen D
- richard neville — Earl of (Richard Neville, Earl of Salisbury"the Kingmaker") 1428–71, English military leader and statesman.
- riverbank grape — a high-climbing vine, Vitis riparia, of eastern North America, having fragrant flowers and nearly black fruit.
- salivary glands — any of several glands, as the submaxillary glands, that secrete saliva.
- sauvignon blanc — a white grape grown primarily in France and California.
- save one's skin — to avoid harm or injury; esp., to escape death
- savings account — a bank account on which interest is paid, traditionally one for which a bankbook is used to record deposits, withdrawals, and interest payments.
- saviour sibling — a child conceived through IVF and screened for compatibility with a terminally or seriously ill sibling in order to provide organ or cell donations as a form of treatment
- scanning device — any of various devices used in medical diagnosis to obtain an image of an internal organ or part
- self-evaluation — an act or instance of evaluating or appraising.
- self-initiative — an introductory act or step; leading action: to take the initiative in making friends.
- self-motivation — initiative to undertake or continue a task or activity without another's prodding or supervision.
- self-revelation — disclosure of one's private feelings, thoughts, etc., especially when unintentional.
- self-validating — requiring no external confirmation, sanction, or validation.
- semi-vegetarian — a person who eats mostly plant foods, dairy products, and eggs, and occasionally chicken, fish, and red meat.
- semilunar valve — either of two valves, one in the aorta and one in the pulmonary artery, consisting of a set of three crescent-shaped flaps of tissue and serving to prevent blood from flowing back into the heart after contraction.
- seminal vesicle — either of two small saclike glands, located on each side of the bladder in males, that add nutrient fluid to semen during ejaculation.
- sensitive plant — Also called humble plant. a tropical American plant, Mimosa pudica, cultivated in greenhouses, having bipinnate leaves whose leaflets fold together when touched.
- service station — Also called gas station. a place equipped for servicing automobiles, as by selling gasoline and oil, making repairs, etc.
- servo-mechanism — A servo-mechanism is a system or device that provides increased power to operate a control.
- seven-year itch — scabies.
- sibling rivalry — the feeling of competitiveness that often exists between brothers and sisters
- significatively — serving to signify.
- silver quandong — an Australian tree, Elaeocarpus grandis: family Elaeocarpaceae
- silver standard — a monetary standard or system using silver of specified weight and fineness to define the basic unit of currency.
- 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
- social movement — a group of diffusely organized people or organizations striving toward a common goal relating to human society or social change, or the organized activities of such a group: The push for civil rights was a social movement that peaked in the 1950s and 1960s.
- sri-vaishnavism — a Hindu sect advocating theistic devotion as a philosophically and scripturally valid way to achieve salvation.
- stacking swivel — a metal swivel attached to the stock of a military rifle for use in hooking three rifles together to form a stack.
- starvation diet — insufficient food to stay alive
- stationary wave — standing wave.
- steel engraving — a method of incising letters, designs, etc., on steel.
- string variable — data on which arithmetical operations will not be performed
- subcivilization — a division of a civilization
- subclavian vein — either of a pair of veins, one on each side of the body, that return blood from the arms to the heart.
- subconjunctival — the mucous membrane that lines the exposed portion of the eyeball and inner surface of the eyelids.
- substantiveness — a noun.
- subvocalization — the act or process of producing subvocal speech
- superindividual — greater than the individual
- sylvian fissure — lateral fissure.
- tactical voting — Tactical voting is the act of voting for a particular person or political party in order to prevent someone else from winning, rather than because you support that person or party.
- tank locomotive — a steam locomotive carrying its own fuel and water without the use of a tender.