atomic number 89

1. 1.

   a radioactive element of the actinide series; found in uranium ores

   SynonymsactiniumAc

   Broaderchemical element

Questions about atomic number 89

What does atomic number 89 mean?

atomic number 89 means "a radioactive element of the actinide series; found in uranium ores".

What is another word for atomic number 89?

Close synonyms include actinium, Ac. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is atomic number 89 a common word?

atomic number 89 is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.