(virology) ultramicroscopic infectious agent that replicates itself only within cells of living hosts; many are pathogenic; a piece of nucleic acid (DNA or RNA) wrapped in a thin coat of protein
a software program capable of reproducing itself and usually capable of causing great harm to files or other programs on the same computer; "a true virus cannot spread to another computer without human assistance"
a harmful or corrupting agency; "bigotry is a virus that must not be allowed to spread"; "the virus of jealousy is latent in everyone"
the act or process of drawing up plans or layouts for some project or enterprise
an act of formulating a program for a definite course of action; "the planning was more fun than the trip itself"
the cognitive process of thinking about what you will do in the event of something happening; "his planning for retirement was hindered by several uncertainties"
done swiftly in or as if in the air; used e.g. of a racing start in which runners are already in motion as they cross the starting line; "a flying start"; "crossed the goal line with a flying leap"
hurried and brief; "paid a flying visit"; "took a flying glance at the book"; "a quick inspection"; "a fast visit"
of or relating to passage through the air (especially aviation); "a flying time of three hours between cities"; "unidentified flying objects"
designed for swift movement or action; "a flying police squad is trained for quick action anywhere in the city"
capable of or engaged in flight; "the bat is a flying animal"