[1] : WordNet (r) 2.0

unnilpentium
     n : a transuranic element that has not been found in nature
         syn: unnilquintium, unp, hahnium, element 105, atomic
         number 105
see also:
unnilquintium unp hahnium element 105 atomic number 105 

[2] : Elements database 20001107

unnilpentium
symbol: unp
atomic number: 105
atomic weight: 262
radioactive transactinide element. half-life of 1.6s. discovered in 1970
by berkeley researchers. so far, seven isotopes have been discovered.

Unnilpentium >> U Words
Unnilpentium, definition of term: Unnilpentium
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