Actinide Definition

ăktə-nīd
noun
Any of a series of chemically similar, radioactive elements with atomic numbers ranging from 89 (actinium) through 103 (lawrencium).
American Heritage
Any of the elements in the series (actinide series) of radioactive, metallic chemical elements from element 89 (actinium) through element 103 (lawrencium): actinides resemble lanthanides in electronic structure.
Webster's New World

(inorganic chemistry) Any of the 14 radioactive elements of the periodic table that are positioned under the lanthanides to which they have similar chemistry.

Wiktionary
Synonyms:
Advertisement
other
Any of a series of chemically similar metallic elements with atomic numbers ranging from 89 (actinium) to 103 (lawrencium). All of these elements are radioactive, and two of the elements, uranium and plutonium, are used to generate nuclear energy.
American Heritage Science
Advertisement

Other Word Forms of Actinide

Noun

Singular:
actinide
Plural:
actinides

Origin of Actinide

  • actin(ium) –ide

    From American Heritage Dictionary of the English Language, 5th Edition

  • actin- +‎ -ide

    From Wiktionary

Find Similar Words

Find similar words to actinide using the buttons below.

Words Starting With

Words Ending With

Unscrambles

actinide
Advertisement