Gastropods

Part of speech: noun

Definitions

1. A diverse class of invertebrates encompassing soft-bodied creatures commonly recognized as snails and slugs, which often have a spiraled shell or lack one entirely, and exhibit a range of adaptations for movement and habitat
2. This group is distinguished by a unique developmental process called torsion, influencing their bodily structure and ecological roles in both marine and land settings
3. A classification of mollusks that includes snails and slugs, characterized by soft bodies and, in many cases, a coiled shell as well as various locomotion and survival adaptations

Etymology: The name rests on a single anatomical observation: these animals appear to walk on their stomachs. Their broad, muscular foot lies beneath a body that seems to have the gut slung over it, and the Greek roots say exactly that, "gastḗr" meaning "stomach" and "poús" meaning "foot." The compound was assembled in New Latin, the scientific Latin used by naturalists, and it reached the French naturalist Georges Cuvier, who used the group name in 1795 in a paper on the structure of mollusks, published in a French encyclopedic journal. The word is plural here because it names a whole group. The singular "gastropod" refers to one member of it, and "gastropods" is the form used for the class as a whole.