No, a scorpion is not an insect. While both scorpions and insects are arthropods, they belong to different classes within the phylum Arthropoda.

Scorpions are classified in the class Arachnida, which also includes spiders, ticks, and mites. Arachnids have two main body segments: the cephalothorax (which combines the head and thorax) and the abdomen. Scorpions are known for their elongated bodies, segmented tails ending in a stinger, and pincers (pedipalps) used to catch prey and defend themselves.

Insects, on the other hand, are classified in the class Insecta. Insects have three main body segments: the head, thorax, and abdomen. They also typically have three pairs of legs and often possess wings. Examples of insects include butterflies, ants, bees, and beetles.

So, while both scorpions and insects are arthropods, scorpions belong to the class Arachnida, while insects belong to the class Insecta.