actinide
|ac-ti-nide|
C2
/ˈæktɪˌnaɪd/
radioactive elements
Etymology
Etymology Information
'actinide' originates from the Greek word 'aktinos,' meaning 'ray,' combined with the suffix '-ide,' used to denote a group of related elements.
Historical Evolution
'actinide' was derived from the Greek word 'aktinos' and the suffix '-ide,' forming the modern English term 'actinide.'
Meaning Changes
Initially, it referred to elements related to actinium, but now it encompasses a series of 15 elements in the periodic table.
Meanings by Part of Speech
Noun 1
any of a series of 15 radioactive elements with atomic numbers from 89 (actinium) to 103 (lawrencium) in the periodic table.
Uranium is a well-known actinide used in nuclear reactors.
Synonyms
Last updated: 2025/04/29 15:51