What does lutetium mean?
Lutetium is the chemical element at the end of the lanthanide series, the group of 15 metallic elements that includes lanthanum through ytterbium. Its symbol is Lu, and its atomic number is 71. In ordinary scientific writing, lutetium refers to a silvery, relatively soft metal that occurs in trace amounts in minerals and is separated and studied through specialized chemical processes. It has practical uses in research on lasers, detectors, and optical materials, although it is much less familiar than metals such as iron, copper, or gold. The name comes through Latin from Lutetia, the Roman name associated with Paris, making its history unusual among element names. Lutetium is consequently a useful word for readers interested in chemistry, geography, and the history of scientific naming, though it rarely appears outside technical contexts.
nounLutetium is a chemical element in the lanthanide series, with atomic number 71 and the symbol Lu. It is a silvery, relatively soft metal that occurs naturally in several minerals and is mainly used in scientific and specialized industrial research.
- The chemical element lutetium, a silvery lanthanide metal with atomic number 71 and symbol Lu.
"Researchers used lutetium to investigate the optical properties of specialized crystals."
"The specimen contained trace amounts of lutetium alongside other rare-earth elements."
"A crystal of lutetium oxide was used in the laboratory's optical experiment."
Rare in general use; plural forms may occur in technical descriptions of separate samples, components, or isotopes.
"The laboratory compared the properties of several lutetiums under extreme conditions."
Lutetium is the final member of the lanthanide series, yet its name points not to a remote landscape but to Paris, the ancient city of Lutetia.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does lutetium come from?
The name lutetium was formed in New Latin from Lutetia, the Roman name for Paris. Lutetia was the ancient settlement later known as Paris, and the element's name therefore follows the practice of commemorating places with prominent historical associations. The related adjective Lutetian means “of or relating to Lutetia or Paris.”
How lutetium is actually used
Lutetium is specialized scientific vocabulary rather than everyday language. It is normally used in technical contexts involving chemistry, materials science, physics, or mineralogy.
Easily confused with lutetium
Lutecium is an obsolete spelling of lutetium, while lutetium is the modern English spelling of the element's name.