Adenosin

Part of speech: noun

Definitions

1. A nucleoside formed from the purine base adenine joined to a ribose sugar, important in energy transfer and genetic material
2. A compound consisting of the nitrogenous base adenine attached to a five-carbon sugar, found throughout living cells
3. An organic molecule built from adenine and ribose that serves as a building block of RNA and carries cellular energy as part of ATP

Etymology: Adenosine is a compound built from two parts: "adenine," a nitrogen-rich base found in DNA and RNA, and "ribose," a five-carbon sugar. Chemists joined the two into a single molecule, and the "-osine" ending follows the pattern used for nucleosides, the building blocks formed when a base bonds to a sugar. The name thus records its structure directly, with no mythical or personal origin behind it. Adenine itself takes its name from the Greek "adēn," meaning "gland," because the compound was first isolated from pancreatic tissue. That is a surprising link: a word for a gland ended up naming a molecule central to the energy currency of every living cell.