English

Adjective

transactinide ‎(comparative more transactinide, superlative most transactinide)

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

Coordinate terms

• transuranic

Noun

transactinide ‎(plural transactinides)

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