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
direct carefully and safely; "He navigated his way to the altar"
act as the navigator in a car, plane, or vessel and plan, direct, plot the path and position of the conveyance; "Is anyone volunteering to navigate during the trip?"; "Who was navigating the ship during the accident?"
get or cause to become in a difficult or laborious manner
obtain by coercion or intimidation; "They extorted money from the executive by threatening to reveal his past to the company boss"; "They squeezed money from the owner of the business by threatening him"
an artifact (or system of artifacts) that is instrumental in accomplishing some end
the quality of being instrumental for some purpose
a subsidiary organ of government created for a special purpose; "are the judicial instrumentalities of local governments adequate?"; "he studied the French instrumentalities for law enforcement"
the ordinary members of an organization (such as the enlisted soldiers of an army); "the strike was supported by the union rank and file"; "he rose from the ranks to become a colonel"