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
(meteorology) rapid inward circulation of air masses about a low-pressure center; circling counterclockwise in the northern hemisphere and clockwise in the southern
useless or profitless activity; using or expending or consuming thoughtlessly or carelessly; "if the effort brings no compensating gain it is a waste"; "mindless dissipation of natural resources"
(law) reduction in the value of an estate caused by act or neglect
any materials unused and rejected as worthless or unwanted; "they collect the waste once a week"; "much of the waste material is carried off in the sewers"
waste away; "Political prisoners are wasting away in many prisons all over the world"
cause to grow thin or weak; "The treatment emaciated him"
use inefficiently or inappropriately; "waste heat"; "waste a joke on an unappreciative audience"
run off as waste; "The water wastes back into the ocean"
get rid of; "We waste the dirty water by channeling it into the sewer"
spend thoughtlessly; throw away; "He wasted his inheritance on his insincere friends"; "You squandered the opportunity to get and advanced degree"