1. Arachnid, term for animals in the class including the scorpions, spiders, daddy longlegs, mites, and ticks, and certain other eight-legged land invertebrates

2. The Arachnids (class Arachnida) are an arthropod group that includes spiders, daddy longlegs, scorpions, mites, and ticks as well as lesser-known subgroups

3. Arachnid, any member of the arthropod group that includes spiders, daddy longlegs, scorpions, and mites and ticks, as well as lesser-known subgroups

4. Arachnida - a large class of arthropods including spiders and ticks and scorpions and daddy longlegs; have four pairs of walking legs and no wings

5. Arachnid, (class Arachnida), any member of the arthropod group that includes spider s, daddy longlegs, scorpion s, and (in the subclass Acari) the mite s and tick s, as well as lesser-known subgroups

6. Noun any wingless, carnivorous arthropod of the class Arachnida, including spiders, scorpions, mites, ticks, and daddy-longlegs, having a body divided into two parts, the cephalothorax and the abdomen, and having eight appendages and no antennae.Compare insect.

7. Order Acarina animal order - the order of animals Arachnida, class Arachnida - a large class of arthropods including spiders and ticks and scorpions and daddy longlegs; have four pairs of walking legs and no wings acarine - mite or tick

8. Arachnid definition, any wingless, carnivorous arthropod of the class Arachnida, including spiders, scorpions, mites, ticks, and daddy-longlegs, having a body divided into two parts, the cephalothorax and the abdomen, and having eight appendages and no antennae