a variable quantity that can be resolved into components
any agent (person or animal or microorganism) that carries and transmits a disease; "mosquitos are vectors of malaria and yellow fever"; "fleas are vectors of the plague"; "aphids are transmitters of plant diseases"; "when medical scientists talk about vectors they are usually talking about insects"
a straight line segment whose length is magnitude and whose orientation in space is direction
the action of opposing something that you disapprove or disagree with; "he encountered a general feeling of resistance from many citizens"; "despite opposition from the newspapers he went ahead"
the military action of resisting the enemy's advance; "the enemy offered little resistance"
group action in opposition to those in power
(psychiatry) an unwillingness to bring repressed feelings into conscious awareness
the degree of unresponsiveness of a disease-causing microorganism to antibiotics or other drugs (as in penicillin-resistant bacteria)
any mechanical force that tends to retard or oppose motion
possessing or using or characteristic of or appropriate to supernatural powers; "charming incantations"; "magic signs that protect against adverse influence"; "a magical spell"; "'tis now the very witching time of night"- Shakespeare; "wizard wands"; "wizardly powers"
pleasing or delighting; "endowed with charming manners"; "a charming little cottage"; "a charming personality"
the quality of being difficult to do; "he assigned a series of problems of increasing hardness"; "the ruggedness of his exams caused half the class to fail"
the property of being rigid and resistant to pressure; not easily scratched; measured on Mohs scale
existing in fact; not theoretical; real; "a decline in the effective demand"; "confused increased equipment and expenditure with the quantity of effective work done"
able to accomplish a purpose; functioning effectively; "people who will do nothing unless they get something out of it for themselves are often highly effective persons..."-G.B.Shaw; "effective personnel"; "an efficient secretary"; "the efficient cause of the revolution"
exerting force or influence; "the law is effective immediately"; "a warranty good for two years"; "the law is already in effect (or in force)"
producing or capable of producing an intended result or having a striking effect; "an air-cooled motor was more effective than a witch's broomstick for rapid long-distance transportation"-LewisMumford; "effective teaching methods"; "effective steps toward peace"; "made an effective entrance"; "his complaint proved to be effectual in bringing action"; "an efficacious law"
works well as a means or remedy; "an effective reprimand"; "a lotion that is effective in cases of prickly heat"
ready for service; "the fort was held by about 100 effective soldiers"
the quality of being solid and reliable financially or factually or morally; "the solidity of the evidence worked in his favor"; "the solidness of her faith gave her enduring hope"
a certain degree of unwillingness; "a reluctance to commit himself"; "his hesitancy revealed his basic indisposition"; "after some hesitation he agreed"
(physics) opposition to magnetic flux (analogous to electric resistance)
pleasing to the eye or mind especially through beauty or charm; "a remarkably attractive young man"; "an attractive personality"; "attractive clothes"; "a book with attractive illustrations"
having power to arouse interest; "an attractive opportunity"; "the job is attractive because of the pay"
of great significance or value; "important people"; "the important questions of the day"
having or suggesting a consciousness of high position; "recited the decree with an important air"; "took long important strides in the direction of his office"
a part of the cell containing DNA and RNA and responsible for growth and reproduction
any histologically identifiable mass of neural cell bodies in the brain or spinal cord
the positively charged dense center of an atom
(astronomy) the center of the head of a comet; consists of small solid particles of ice and frozen gas that vaporizes on approaching the sun to form the coma and tail
the act of dragging (pulling with force); "the drag up the hill exhausted him"
clothing that is conventionally worn by the opposite sex (especially women's clothing when worn by a man); "he went to the party dressed in drag"; "the waitresses looked like missionaries in drag"
something tedious and boring; "peeling potatoes is a drag"
something that slows or delays progress; "taxation is a drag on the economy"; "too many laws are a drag on the use of new land"
the phenomenon of resistance to motion through a fluid
proceed for an extended period of time; "The speech dragged on for two hours"
persuade to come away from something attractive or interesting; "He dragged me away from the television set"
pull, as against a resistance; "He dragged the big suitcase behind him"; "These worries were dragging at him"
to lag or linger behind; "But in so many other areas we still are dragging"
move slowly and as if with great effort
use a computer mouse to move icons on the screen and select commands from a menu; "drag this icon to the lower right hand corner of the screen"
an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system; "spare components for cars"; "a component or constituent element of a system"
an abstract part of something; "jealousy was a component of his character"; "two constituents of a musical composition are melody and harmony"; "the grammatical elements of a sentence"; "a key factor in her success"; "humor: an effective ingredient of a speech"