Cephalexin

Part of speech: noun

Definitions

1. A medication classified as a cephalosporin antibiotic, it functions by inhibiting the growth of bacteria, thus treating various infections, including those of the skin and respiratory system
2. A type of antibiotic belonging to the cephalosporin class, this substance works by blocking bacterial growth, which helps to manage infections like skin and respiratory issues
3. This medication, part of the cephalosporin family, acts by preventing bacteria from multiplying, effectively addressing infections that affect the skin and respiratory tract

Etymology: Cephalexin is a drug name built from chemical nomenclature rather than from a historical word, so its story is the story of how it was named. It belongs to the cephalosporin family of antibiotics, and its name comes from "cephalosporanic acid", the parent compound from which the drug is made. That acid's name combines "cephalo-", from Greek "kephalē" meaning "head", with "sporangium", the spore-producing structure of the fungus "Cephalosporium" from which the acid was first obtained. So the name ultimately points to a mould whose spore cases were named for their head-like appearance. The shortened form "cefalexin" drops the "alo" and keeps the "cef-" that marks the cephalosporin class, while "-exin" is a suffix added to distinguish this particular member of the family. The "-ex-" element is a common pattern in drug names of the era and carries no independent meaning, so the word is best understood as a coined label rather than a traditional one.