A baby spider is commonly referred to as a spiderling. When spiders hatch from their eggs, they emerge as tiny versions of adult spiders, known as spiderlings. This term is used to describe them during their early stages of life before they mature into full-grown spiders.
Spiderlings are usually very small and may vary in appearance depending on the species. After hatching, they may stay with their mother for a short time or disperse to find their own territory. During this period, they go through several molts as they grow, which is a process where they shed their exoskeleton to allow for growth. Eventually, they will mature into adult spiders, capable of reproducing themselves.