actinide

[ ak-tuh-nahyd ]
/ ˈæk təˌnaɪd /

noun Chemistry.

any element of the actinide series.

Origin of actinide

1940–45; actin- + -ide, on the model of lanthanide

Words nearby actinide

actinic dermatitis, actinic elastosis, actinic granuloma, actinic keratosis, actinic ray, actinide, actinide series, actiniform, actinin, actinism, actinium

British Dictionary definitions for actinide

actinide
/ (ˈæktɪˌnaɪd) /

noun

a member of the actinide series Also called: actinon

Word Origin for actinide

C19: from actino- + -ide

Medical definitions for actinide

actinide
[ ăk′tə-nīd′ ]

n.

Any of a series of chemically similar radioactive elements with atomic numbers ranging from 89 (actinium) through 103 (lawrencium).

Scientific definitions for actinide

actinide
[ ăk′tə-nīd′ ]

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. See Periodic Table.