English edit

Etymology edit

trans- +‎ actinide

Adjective edit

transactinide (not comparable)

  1. (chemistry, physics) Lying beyond lawrencium (the last actinide) in the periodic table; having an atomic number greater than 103.

Hypernyms edit

Noun edit

transactinide (plural transactinides)

  1. (chemistry, physics) Any of the artificially produced elements having an atomic number greater than 103.