What does "iridium" mean?

A chemical element (symbol Ir) with an atomic number of 77: a very hard, brittle, silvery-white transition metal of the platinum group.

What is a synonym for "iridium"?

Common synonyms include: atomic number 77, chemical element ir, element 77, gold, ir, ir-191 isotope.

Pronounced //ɪˈɹɪd.i.əm//.

/ɪˈɹɪd.i.əm/ noun

noun ·Rare ·Advanced level

Noun

1
A chemical element (symbol Ir) with an atomic number of 77: a very hard, brittle, silvery-white transition metal of the platinum group. uncountable
"Iridium is extremely rare on the surface of the earth but much more common in meteorites."
2
a heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium wordnet
3
A single atom of this element. countable

"Iridium is one of the rarest elements."

From international scientific vocabulary, from the New Latin.