Mesomelic

Part of speech: adjective

Definitions

1. Relating to or denoting a form of dwarfism that affects the middle long bones of the arms and legs while sparing the hands, feet, and trunk
2. Describing a type of skeletal dysplasia characterized by shortening of the radius, ulna, tibia, and fibula rather than the terminal limb segments
3. Pertaining to a genetic condition in which the middle portions of the limbs are disproportionately shortened compared to other body parts

Etymology: "Mesomelic" describes a pattern of limb shortening in which the forearms and lower legs are noticeably shorter than the upper arms and thighs, a feature seen in certain skeletal dysplasias. The term is built from "mesomelia," a noun formed from the Greek "mesos," meaning middle, and "melos," meaning limb, and the adjective adds the suffix "-ic." The result is a name that literally points to the middle segment of a limb, the part that is disproportionately reduced. The pattern of the word is plain: a modern medical coinage assembled from classical Greek parts, following the common scientific habit of naming a condition from its anatomy rather than from any older folk vocabulary. Ancient Greek writers had no such term, since the clinical description of these proportions belongs to modern medicine.