19-letter words containing t, r, a, v

have a nose for sth — If you say that someone has a nose for something, you mean that they have a natural ability to find it or recognize it.
have a problem with — to be unable to understand or do
have an ax to grind — an instrument with a bladed head on a handle or helve, used for hewing, cleaving, chopping, etc.
heavy-water reactor — a nuclear reactor that uses heavy water as moderator
henry david thoreau — Henry David, 1817–62, U.S. naturalist and author.
henry the navigator — Prince, 1394–1460, prince of Portugal.
hepatic portal vein — a vein connecting two capillary networks in the liver
imperative language — (language) Any programming language that specifies explicit manipulation of the state of the computer system, not to be confused with a procedural language, which specifies an explicit sequence of steps to perform. An example of an imperative (but non-procedural) language is a data manipulation language for a relational database management system. This specifies changes to the database but does not necessarily require anyone to specify a sequence of steps. Both contrast with declarative languages, which specify neither explicit state manipulation nor a sequence of steps.
in the driving seat — If you say that someone is in the driving seat, you mean that they are in control in a situation.
in-service training — training that is given to employees during the course of employment
indeterminate vowel — schwa.
indirect initiative — a procedure in which a statute or amendment proposed by popular petition must receive legislative consideration before being submitted to the voters.
inductive reactance — the opposition of inductance to alternating current, equal to the product of the angular frequency of the current times the self-inductance. Symbol: X L.
information service — a service which provides information
intensive care unit — the specialized center in a hospital where intensive care is provided. Abbreviation: ICU.
interactive fiction — an adventure or mystery story, usually presented as a video game or book, in which the player or reader is given choices as to how the storyline is to develop or the mystery is to be solved.
internal conversion — the emission of an electron by an atom with an excited nucleus, occurring as a result of the transfer of energy from the nucleus to the electron.
interval estimation — the process of estimating a parameter of a given population by specifying an interval of values and the probability that the true value of the parameter falls within this interval.
intervertebral disc — any of the cartilaginous discs between individual vertebrae, acting as shock absorbers
intervertebral disk — the plate of fibrocartilage between the bodies of adjacent vertebrae.
intrauterine device — any small, mechanical device for semipermanent insertion into the uterus as a contraceptive. Abbreviation: IUD.
iterative deepening — (algorithm) A graph search algorithm that will find the shortest path with some given property, even when the graph contains cycles. When searching for a path through a graph, starting at a given initial node, where the path (or its end node) has some desired property, a depth-first search may never find a solution if it enters a cycle in the graph. Rather than avoiding cycles (i.e. never extend a path with a node it already contains), iterative deepening explores all paths up to length (or "depth") N, starting from N=0 and increasing N until a solution is found.
japanese arborvitae — a Japanese evergreen tree, Thuja standishii, having spreading branches with bright-green leaves.
leave the door open — a movable, usually solid, barrier for opening and closing an entranceway, cupboard, cabinet, or the like, commonly turning on hinges or sliding in grooves.
lieutenant governor — a state officer next in rank to a governor, who takes the governor's place in case of the latter's absence, disability, or death.
love at first sight — instant romantic attraction to sb
lymphoproliferative — Characterized by lymphoproliferation.
magnetic tape drive — (storage) (Or "tape drive") A peripheral device that reads and writes magnetic tape.
magnetomotive force — a scalar quantity that is a measure of the sources of magnetic flux in a magnetic circuit. Abbreviation: mmf.
major seventh chord — a chord much used in modern music, esp jazz and pop, consisting of a major triad with an added major seventh above the root
margaret of navarre — 1492–1549, queen of Navarre 1544–49: patron of literature, author of stories, and poet.
massive retaliation — a strategy of military counterattack that involves the use of nuclear weapons.
matthias i corvinus — ?1440–90, king of Hungary (1458–90): built up the most powerful kingdom in Central Europe. A patron of Renaissance art, he founded the Corvina library, one of the finest in Europe
maturation division — a stage in meiosis during which the chromosomal number of the reproductive cell is reduced to one chromosome from each original chromosome pair.
mediterranean fever — brucellosis.
military government — a government in defeated territory administered by the military commander of a conquering nation.
montezuma's revenge — traveler's diarrhea, especially as experienced by some visitors to Mexico.
most favored nation — a nation to which privileges of trade are extended under a government policy of giving the same privileges to all nations that are given to any one of them, sometimes depending on whether certain conditions, as of reciprocity, are met
most-favored-nation — of or relating to the status, treatment, terms, etc., that are embodied in or conferred by a most-favored-nation clause.
motivation research — the application of the knowledge and techniques of the social sciences, especially psychology and sociology, to understanding consumer attitudes and behavior: used as a guide in advertising and marketing.
multiple-entry visa — a visa that permits the holder to enter a country several times
mushroom ventilator — a ventilator having at the top of a vertical shaft a broad rounded cap that can be screwed down to close it.
national government — A national government is a government with members from more than one political party, especially one that is formed during a crisis.
national serviceman — a soldier undertaking compulsory military service
neats vs. scruffies — (artificial intelligence, jargon) The label used to refer to one of the continuing holy wars in artificial intelligence research. This conflict tangles together two separate issues. One is the relationship between human reasoning and AI; "neats" tend to try to build systems that "reason" in some way identifiably similar to the way humans report themselves as doing, while "scruffies" profess not to care whether an algorithm resembles human reasoning in the least as long as it works. More importantly, neats tend to believe that logic is king, while scruffies favour looser, more ad-hoc methods driven by empirical knowledge. To a neat, scruffy methods appear promiscuous, successful only by accident and not productive of insights about how intelligence actually works; to a scruffy, neat methods appear to be hung up on formalism and irrelevant to the hard-to-capture "common sense" of living intelligences.
negative resistance — a characteristic of certain electronic components in which an increase in the applied voltage increases the resistance, producing a proportional decrease in current
nerve growth factor — a protein that promotes the growth, organization, and maintenance of sympathetic and some sensory nerve cells. Abbreviation: NGF.
non-volatile memory — non-volatile storage
nonforfeiture value — any benefit, as cash or other form of insurance, available to a life-insurance policyholder who discontinues premium payments on the policy.
north valley stream — a town on W Long Island, in SE New York.

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