Thulium
/ˈθuːliəm/
Definition 1 of 1
Pro Tip 1/3Scientific Usage
Thulium is typically used in scientific or technical contexts, not in everyday language. 
Research labs may use thulium in specialized experiments.
Pro Tip 2/3Rare Element
Thulium is uncommon, so it is not widely discussed outside of scientific circles. 
Did you know thulium is more rare than gold?
Pro Tip 3/3No Colloquial Use
Thulium doesn't have slang or colloquial uses; it retains its scientific meaning. 
Unlike 'cool' or 'ironic', 'thulium' doesn't have a non-literal meaning.