is the word describing the class of spiders called arachnids
the class of a spider is arachnida Spiders belong to the aracnid familly along with all the other types of spiders. Spiders are not insects. They are arachnids. So are scorpio â¦ ns, mite, ticks, harvestmen, and many others. 7 people found this useful. 1  Arachnid Advice: Keeping a Tarantula as a Pet Exotic pets are becoming more and more popular these days. 2  For some people, the average dog or cat just doesn't fit the bill.