See Also: yttrium-90(medicine)
yttrium(medicine)
Yttrium(health)
yttrium(dictionary)
yttrium isotopes(medicine)
yttrium radioisotopes(medicine)

yttrium (iou)



yttrium noun. E19.
[from Ytter(by: see YTTERBIUM, -IUM.]
A dark grey metallic chemical element, atomic no. 39, belonging to the group of transition metals and used in special alloys, microwave ferrites, etc. (Symbol Y.)
Comb.: yttrium metal, yttrium subgroup any of a group of metals occurring together in certain ores, including yttrium and five rare earths of the lanthanide series.
yttria noun yttrium oxide, Y2O3, a yellowish-white powder obtained from gadolinite etc. and used in phosphors for colour television tubes, in incandescent mantles, etc. E19.
y'ttriferous adjective containing or yielding yttrium L19.