15-letter words containing v, r, a
- travel sickness — nausea caused by motion
- traveler's-tree — a bananalike tree, Ravenala madagascariensis, of Madagascar, having large leaves, the petioles of which contain a clear, watery sap.
- traveling block — (in a hoisting tackle) the block hooked to and moving with the load.
- traveller's joy — a ranunculaceous Old World climbing plant, Clematis vitalba, having white flowers and heads of feathery plumed fruits
- 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
- trochlear nerve — either one of the fourth pair of cranial nerves, consisting of motor fibers that innervate the superior oblique muscle of the upper part of the eyeball.
- truth-value gap — the possibility in certain semantic systems of a statement being neither true nor false while also not being determinately of any third truth-value, as all my children are asleep uttered by a childless person
- ultraconvenient — extremely convenient
- unadventurously — in an unadventurous manner
- 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
- vacuum concrete — concrete from which excess moisture and air are sucked to quicken hardening and increase strength.
- vaginal dryness — abnormal dryness of the vagina, caused by lack of natural lubrication
- valency grammar — a system of linguistic syntax, conceived by analogy with chemical valency, according to which verbs have valencies dependent on the number of noun phrases with which they combine
- valerian family — the plant family Valerianaceae, characterized by herbaceous plants and shrubs having simple or compound, opposite leaves, clusters of small flowers, and dry, indehiscent fruit, and including corn salad, spikenard (Nardostachys jatamansi), and valerian.
- vanishing cream — a cosmetic similar to cold cream but less oily, applied usually to the face and neck as a base, night cream, or moisturizer.
- vanishing spray — a substance that disperses without trace shortly after it is sprayed onto a surface, used in football to mark a temporary line behind which defenders must stand when a free kick is taken
- vapour pressure — the pressure exerted by a vapour. The saturated vapour pressure is that exerted by a vapour in equilibrium with its solid or liquid phase at a particular temperature
- variable region — a configuration in the upper branches of the Y of an antibody molecule, unique in each antibody type, that binds with the determinant of a specific antigen.
- variant reading — an alternative interpretation of a word in a text to the one generally accepted
- varicocelectomy — the surgical removal or ligation of varicose veins in the scrotal sac.
- variola porcina — an acute infectious viral disease of pigs characterized by skin eruptions
- vascular bundle — a longitudinal arrangement of strands of xylem and phloem, and sometimes cambium, that forms the fluid-conducting channels of vascular tissue in the rhizomes, stems, and leaf veins of vascular plants, the arrangement varying with the type of plant.
- vascular system — plant tissue consisting of ducts or vessels, that, in the higher plants, forms the system (vascular system) by which sap is conveyed through the plant.
- vascular tissue — plant tissue consisting of ducts or vessels, that, in the higher plants, forms the system (vascular system) by which sap is conveyed through the plant.
- vascularization — (of a tissue or embryo) to develop or extend blood vessels or other fluid-bearing vessels or ducts; become vascular.
- vasoconstrictor — a nerve or drug that causes vasoconstriction.
- vector addition — the process of finding one vector that is equivalent to the result of the successive application of two or more given vectors.
- vector analysis — the branch of calculus that deals with vectors and processes involving vectors.
- vegetable ivory — ivory (def 9).
- velcro fastener — a fastener made of Velcro
- venture capital — funds invested or available for investment in a new or unproven business enterprise.
- venus hairstone — a variety of rutilated quartz, used as a gemstone.
- venus's-flytrap — a carnivorous plant, Dionaea muscipula, native to bogs of North and South Carolina, having roundish leaves with two lobes that close like a trap when certain delicate hairs on them are irritated, as by a fly: the range is now reduced, though the plants are still locally abundant.