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virus : any of a large group of submicroscopic infectious agents that are usually regarded as nonliving extremely complex molecules, that typically contain a protein coat surrounding an RNA or DNA core of genetic material but no semipermeable membrane, that are capable of growth and multiplication only in living cells, and that cause various important diseases in humans, animals, and plants — Merriam-Webster   See also   OneLook


Virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea. Since Dmitri Ivanovsky’s 1892 article describing a non-bacterial pathogen infecting tobacco plants and the discovery of the tobacco mosaic virus by Martinus Beijerinck in 1898, more than 9,000 virus species have been described in detail of the millions of types of viruses in the environment. Viruses are found in almost every ecosystem on Earth and are the most numerous type of biological entity. — Wikipedia

Virus (Encyclopædia Britannica)
Virus (Biology Online)

Viruses (Tree of Life)
Viruses (Catalogue of Life)
Viruses (WolframAlpha)



Talks about Viruses (TED: Ideas Worth Spreading)
Articles about Viruses (Big Think)




Virology is the scientific study of biological viruses. It is a subfield of microbiology that focuses on their detection, structure, classification and evolution, their methods of infection and exploitation of host cells for reproduction, their interaction with host organism physiology and immunity, the diseases they cause, the techniques to isolate and culture them, and their use in research and therapy. — Wikipedia

Virology (Encyclopædia Britannica)

All the Virology on the WWW




DDC: 579.2 Virology (Library Thing)
Subject: Virology (Library Thing)

Subject: Virology (Open Library)

LCC: QR 355 Virology (UPenn Online Books)
Subject: Virology (UPenn Online Books)

LCC: QR 355 Virology (Library of Congress)
Subject: Virology (Library of Congress)

Subject: Virology (WorldCat)




Viruses (Science Trek)
Viruses (Biology4Kids)
Prokaryotes, Eukaryotes, & Viruses Tutorial (The Biology Project, University of Arizona)

MERLOT: Multimedia Educational Resource for Learning and Online Teaching
OER Commons: Open Educational Resources


Available Courseware (All the Virology on the WWW)
Virology (edX)



Microbiologists (US Occupational Outlook Handbook)


American Society for Virology
Microbiology Society
American Society for Microbiology


Viruses (MDPI)
Journal of General Virology (Microbiology Society)
Journal of Virology (American Society for Microbiology)
Virus (bioRxiv: Preprint Server for Biology, Cold Spring Harbor Laboratory)
Virus (EurekaAlert, American Association for the Advancement of Science)
Virology News (Science Daily)
Virus (Science News)
Virus (
Viruses (NPR Archives)

Viruses (JSTOR)
Virology (JSTOR)



Virus (


Here are links to pages about closely related subjects.

Knowledge Realm

Terrestrial   (Earth)

Sphere Land, Ice, Water (Ocean), Air, Life (Cell, Gene)
Ecosystem Forest, Grassland, Desert, Arctic, Aquatic

Tree of Life
Microorganism Virus
Prokaryote Archaea, Bacteria
Eukaryote Protist, Fungi, Algae, Protozoa (Tardigrade)
Plant Flower, Tree
Cnidaria Coral, Jellyfish
Cephalopod Cuttlefish, Octopus
Crustacean Lobster, Shrimp
Arachnid Spider, Scorpion
Insect Ant, Bee, Beetle, Butterfly
Fish Seahorse, Ray, Shark
Amphibian Frog, Salamander
Reptile Turtle, Tortoise, Dinosaur
Bird Penguin, Ostrich, Owl, Crow, Parrot
Mammal Platypus, Bat, Mouse, Rabbit, Goat, Giraffe, Camel, Horse, Elephant, Mammoth
Walrus, Seal, Polar Bear, Bear, Panda, Cat, Tiger, Lion, Dog, Wolf
Cetacean Whale, Dolphin
Primate Monkey, Chimpanzee, Human


1.   The resources on this page are are organized by a classification scheme developed exclusively for Cosma.