Arachnids

Part of speech: noun

Definitions

  1. A class of joint-legged invertebrates that includes spiders, scorpions, ticks, and mites, distinguished by having eight legs and a body divided into two segments | A diverse group of arthropods characterized by their eight limbs, which encompass spiders, scorpions, ticks, and mites, typically featuring a body divided into a cephalothorax and abdomen | An order of invertebrates within the phylum Arthropoda, comprising species such as spiders, scorpions, and mites, all noted for possessing eight legs and a lack of antennae
  2. A group of eight-legged invertebrates that consists of species like spiders, scorpions, ticks, and mites, which have a body structure divided into two main sections
  3. This category of joint-legged creatures includes organisms such as spiders, scorpions, and mites, all characterized by their eight limbs and divided body

Etymology: The group of animals known as arachnids takes its name from a figure in Greek mythology: Arachne, a mortal woman who was turned into a spider by the goddess Athena after boasting she could weave better than the gods. This mythological origin reflects the defining characteristic of these creatures—their skillful silk-spinning and web-weaving abilities. The name was adopted scientifically to classify a class of joint-legged invertebrates that includes spiders, scorpions, ticks, and mites. The term itself emerged in the scientific lexicon in the 19th century, during a period of rapid development in biological classification. Derived from the Greek word "aráchnē," meaning spider, it was combined with the suffix "-id," commonly used in taxonomy to denote a family or class of organisms. This formation helped distinguish these creatures as a distinct group within the larger phylum of arthropods, which also includes insects and crustaceans. Over time, the study of arachnids has revealed a fascinating diversity among their members, far beyond the common spider. Despite their variety, the etymological root ties them all back to the ancient image of Arachne, emphasizing the silk-spinning trait that unites the class. The word continues to evoke this mythic connection, bridging ancient storytelling and modern science.

Synonyms: spiders, scorpions