Lipidome

Part of speech: noun

Definitions

1. The collective set of lipids within a biological system is referred to as the entirety of lipid profiles that are found in membranes, signaling pathways, and metabolic processes
2. The totality of lipid-related molecules in a biological context encompasses all types of lipids involved in cell structure, energy storage, and cell signaling
3. A comprehensive catalog of lipids present in a living organism highlights their roles in cellular architecture, energy metabolism, and intercellular communication

Etymology: "Lipidome" is a modern scientific coinage, built in English from "lipid" plus the suffix "-ome." The suffix was borrowed from "genome," which itself was modelled on "chromosome," and it has since been attached to many words to name the complete set of a given kind of molecule within a living thing. So "lipidome" names the full collection of lipids in an organism, much as "genome" names the full set of genes. "Lipid" has deeper roots. It comes from the Ancient Greek "lipos," meaning "fat" or "grease," which traces back to a Proto-Indo-European root meaning "to smear" or "to stick." Through Latin "-idus" and French "lipide," the term entered English as a chemical name for fatty substances, and the "-ome" element then turned it into a term for an entire biological inventory.