transactinide[trans ak′tə nīd′, tranz-]
any of the radioactive chemical elements that have atomic numbers higher than the highest actinide (lawrencium)
also called transactinide element
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
- transactinic adjective
Used by arrangement with John Wiley & Sons, Inc.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Of or belonging to the series of elements whose atomic numbers are greater than 103.