Noun

(en-noun) (wikipedia virus) (Virus)

(archaic) Venom, as produced by a poisonous animal etc.

(pathology, microbiology, virology) A submicroscopic, non-cellular structure consisting of a core of DNA or RNA surrounded by a protein coat, that requires a living host cell to replicate, and often causes disease in the host organism.

* {{quote-magazine, year=2013, month=May-June, author= Katie L. Burke

, title= In the News , volume=101, issue=3, page=193, magazine=(American Scientist) , passage=Bats host many high-profile viruses that can infect humans, including severe acute respiratory syndrome and Ebola.}}

* 2001 , Leslie Iversen, Drugs: A Very Short Introduction (Oxford 2001, p. 64)

Viruses are the smallest and most simplified forms of life.

A disease caused by these organisms.

(computing) A program which can covertly transmit itself between computers via networks (especially the Internet) or removable storage such as CDs, USB drives, floppy disks, etc., often causing damage to systems and data; also computer virus.

Noun

(en noun)

A trail for the use of, or worn by, pedestrians.

* (John Dryden)

The dewy paths of meadows we will tread.

* , chapter=1

, title= Mr. Pratt's Patients, chapter=1 , passage=I stumbled along through the young pines and huckleberry bushes. Pretty soon I struck into a sort of path that, I cal'lated, might lead to the road I was hunting for. It twisted and turned, and, the first thing I knew, made a sudden bend around a bunch of bayberry scrub and opened out into a big clear space like a lawn.}}

A course taken.

* 1900 , , , Chapter I,

Just before Warwick reached Liberty Point, a young woman came down Front Street from the direction of the market-house. When their paths converged, Warwick kept on down Front Street behind her, it having been already his intention to walk in this direction.

(paganism) A Pagan tradition, for example witchcraft, Wicca, druidism, Heathenry.

A metaphorical course.

A method or direction of proceeding.

* Bible, Psalms xxv. 10

All the paths of the Lord are mercy and truth.

* Gray

The paths of glory lead but to the grave.

(computing) A human-readable specification for a location within a hierarchical or tree-like structure, such as a file system or as part of a URL

(graph theory) A sequence of vertices]] from one vertex to another using the arcs ([[edge, edges). A path does not visit the same vertex more than once (unless it is a closed path , where only the first and the last vertex are the same).

(topology) A continuous map $f$ from the unit interval $I\; =\; [0,1]$ to a topological space $X$.