#scorpion

• Antares — The brightest star in the constellation Scorpius and one of the largest known stars, classified as a red supergiant in the advanced stages of its stellar evolution. Due to its distinct reddish-orange hue and its position in the night sky near the ecliptic, its name originates from Ancient Greek, meaning 'rival of Mars', as it was often visually confused with the planet.
• Arachnid — An alternative spelling variant for arahnidă (arachnid); any arthropod invertebrate belonging to the class Arachnida, characterized by a body divided into two distinct regions (prosoma and opisthosoma), the lack of antennae and wings, the presence of chelicerae and pedipalps, and exactly four pairs of articulated walking legs. As an adjective, it describes any anatomical, biological, or behavioral trait pertaining to this massive group which includes spiders, scorpions, ticks, and harvestmen.
• Arachnids — An alternative spelling variant for arahnide (arachnids); a major class of terrestrial or aquatic chelicerate arthropods, characterized by a body segmented into a cephalothorax and abdomen, the lack of antennae, the presence of two pairs of mouth appendages (chelicerae and pedipalps), and exactly eight articulated legs. The class includes spiders, scorpions, harvestmen, mites, and ticks, playing a vital ecological role as insect predators.
• Arachnid — Any arthropod invertebrate belonging to the class Arachnida, characterized by a body divided into two distinct regions named cephalothorax (prosoma) and abdomen (opisthosoma), the total lack of antennae and wings, the presence of chelicerae and pedipalps as mouth appendages, and exactly eight articulated legs destined for terrestrial locomotion. As an adjective, it describes any structural, biological, or behavioral trait specific to this vast group including spiders, scorpions, ticks, and harvestmen.
• Arachnid — Any arthropod invertebrate belonging to the class Arachnida, characterized by a body divided into two distinct regions, the cephalothorax and abdomen, the total lack of antennae and wings, the presence of chelicerae and pedipalps, and exactly eight articulated walking legs. The term defines both scientifically and popularly the members of a vast and adaptable group of terrestrial predators or parasites, including spiders, scorpions, mites, and ticks.
• Arachnologist — A scholar or specialist in arachnology; a biologist dedicated to the methodical and scientific study of organisms within the class Arachnida, including spiders, scorpions, harvestmen, and mites. This specialist investigates the taxonomy, evolutionary anatomy, behavioral ecology, and biochemical composition of these invertebrate arthropods' venoms, playing an important role in monitoring global biodiversity.
• Arachnologist — A woman who specializes in arachnology; a female biologist or zoologist dedicated to the scientific and methodical study of organisms within the class Arachnida, such as spiders, scorpions, mites, and harvestmen. Her activity encompasses field work for collecting specimens, laboratory taxonomic analysis, describing new species, and studying the ecological or biochemical impact of these invertebrates venoms.
• Arachnology — A specialized branch of zoology that deals with the scientific, systematic, and methodical study of organisms classified within the class Arachnida, including spiders, scorpions, harvestmen, and mites. Unlike entomology, which analyzes insects, this discipline focuses on the structural biology, phylogenetic taxonomy, behavioral ecology, and biochemical properties of venoms and silks specific to terrestrial chelicerates.