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spider : any of an order (Araneae synonym Araneida) of arachnids having a short, usually unsegmented abdomen linked to the cephalothorax by the pedicel, chelicerae modified into poison fangs, and two or more pairs of spinnerets at the posterior end of the abdomen for spinning threads of silk for various uses (as in making cocoons for their eggs or webs to catch prey) — Webster

OneLook, Free Dictionary, Wiktionary


Roget’s II (Thesaurus.com), Merriam-Webster Thesaurus, Visuwords


Spider Glossary (Spiders from Europe, Australia and some immunology)


Spiders are air-breathing arthropods that have eight legs and chelicerae with fangs that inject venom. They are the largest order of arachnids and rank seventh in total species diversity among all other orders of organisms. Spiders are found worldwide on every continent except for Antarctica, and have become established in nearly every habitat with the exceptions of air and sea colonization. — Wikipedia

Encyclopædia Britannica


Spiders (Harvard Subject Guides)








Arachnology is the scientific study of spiders and related animals such as scorpions, pseudoscorpions, and harvestmen, collectively called arachnids. Those who study spiders and other arachnids are arachnologists. — Wikipedia




Orb-Weavers: Web Masters of the Spider World (Harvard Museum of Natural History)


WorldCat, Library of Congress, UPenn Online Books, Open Library




Under the spell of spiders (Smithsonian)
Spiders and Scorpions (Biology4Kids)


OER Commons: Open Educational Resources



How to become an Arachnologist (Chris Buddle, Arthropod Ecology)


Arachnology (British Arachnological Society), Science Daily, Phys.org, NPR Archives










OEDILF: The Omnificent English Dictionary In Limerick Form


Song Lyrics


Spiders in literature (Wikipedia)


Spider Mythology and Folklore (Patti Wigington, ThoughtCo)
Spiders in folklore and mythology (Wikipedia)


More News …

Spiders and Ticks News -- ScienceDaily Spiders, scorpions and ticks in the news. Learn why a spider hanging from a thread does not rotate, how spiders find a mate and how ticks carry Lyme Disease. Read about spider silk and spider webs.

  • Scientists discover tarantula-killing worms
    on January 19, 2022 at 2:08 pm

    Scientists have named a newly discovered species of worm that kills tarantulas after American actor Jeff Daniels, a distinction no other actor can claim.

  • Meet a colorful but colorblind spider
    on January 14, 2022 at 3:30 pm

    An international team of researchers found that the brightly colored jumping spider Saitis barbipes could not see its own vivid reds.

  • New guidelines may help reduce tick-borne illness
    on December 14, 2021 at 6:49 pm

    The number of cases of tick-borne illnesses (TBIs) reported annually to the Centers for Disease Control and Prevention (CDC) has more than doubled over the past two decades in the United States. An expert panel has developed a set of clinical practice guidelines that recommends low-risk interventions, employable with minimal resources, to help reduce the number of TBIs.

  • Neurotoxin from a black widow spider examined
    on December 7, 2021 at 3:00 am

    Although many people lose their nerve and panic when they see a spider, only very few of the creatures are actually dangerous. The black widow, however, is a force to be reckoned with: it catches its prey by means of nerve poison -- to be precise, latrotoxins (LaTXs). Researchers have now investigated the substance -- also with a view to medical applications.

  • Male spiders are attracted by a female like...
    on December 6, 2021 at 4:30 pm

    The tiny male golden orb-weaving spider faces a considerable challenge when searching for a mate. He is a fraction of the size of the massive female, but must carefully enter her web and approach her without being noticed, because the cannibalistic female will kill and eat him if he makes one wrong move on her web. Add to this gamble the competition he faces from other males also on the delicate arena of the web, and you have a complex optimization problem that even human analysts would find […]

Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.

  • Are the northern lights caused by 'particles from...
    on January 21, 2022 at 12:30 pm

    What a spectacle a big aurora is, its shimmering curtains and colorful rays of light illuminating a dark sky. Many people refer to aurora as the northern lights (the aurora borealis), but there are southern lights too (the aurora australis). Either way, if you're lucky enough to catch a glimpse of this phenomenon, it's something you won't soon forget.

  • Disease predictions can be improved by factoring...
    on January 20, 2022 at 8:52 pm

    The way mosquitoes react to predators should be included in disease models, say researchers behind a new study.

  • Capturing all that glitters in galaxies with...
    on January 20, 2022 at 2:50 pm

    Spirals are some of the most captivating shapes in the universe. They appear in intricate seashells, carefully constructed spider webs, and even in the curls of ocean waves. Spirals on cosmic scales—as seen in galaxies—are even more arresting, not only for their beauty, but also for the overwhelming amount of information they contain. How do stars and star clusters form? Until recently, a complete answer used to lie out of reach, blocked by gas and dust. Within the first year of operations, […]

  • Scientists discover tarantula-killing worms: New...
    on January 19, 2022 at 10:44 am

    Scientists have named a newly discovered species of worm that kills tarantulas after American actor, musician and producer Jeff Daniels, a distinction no other entertainer can claim.

  • Meet a colorful but color-blind spider
    on January 14, 2022 at 2:44 pm

    Jumping spiders, the flamboyant dandies of the eight-legged set, have names inspired by peacocks, cardinals and other colorful icons.


Here are links to pages about closely related subjects.

Knowledge Realm


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

Life Cell, Gene, Tree of Life
Plant Flower, Tree
Invertebrate Cuttlefish, Octopus, Ant, Bee, Butterfly, Spider, Lobster
Vertebrate Fish, Seahorse, Ray, Shark, Frog, Turtle, Tortoise, Dinosaur
Bird, Ostrich, Owl, Crow, Parrot
Mammal Bat, Rabbit, Giraffe, Camel, Horse, Elephant, Mammoth
Whale, Dolphin, Walrus, Seal, Polar Bear, Bear, Cat, Tiger, Lion, Dog, Wolf
Monkey, Chimpanzee, Human


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