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
a message that tells the particulars of an act or occurrence or course of events; presented in writing or drama or cinema or as a radio or television program; "his narrative was interesting"; "Disney's stories entertain adults as well as children"
consisting of or characterized by the telling of a story; "narrative poetry"