actinide en · NOUN
Pronunciation
- /ˈæktɪnaɪd/
- (Southern-England) audio
- ăk'tĭnīd
Etymology
From actin- + -ide.
Meanings
- Any of the 15 radioactive elements of the periodic table from actinium to lawrencium that are positioned under the lanthanides, to which they have similar chemistry.
- Any of the 14 elements from actinium to nobelium (lawrencium is excluded by some authors as it is a d-block rather than an f-block element).
- (dated) Any of the 14 elements from thorium to lawrencium (actinium having been mistakenly excluded because it was thought to be a d-block element in the past).
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| actinides | Number=Plur | lexicographic |
Deriveds
actinidic · transactinide · superactinide · radioactinide · organoactinide · nonactinide
Relateds
mendelevium · nobelium · actinium · lawrencium · neptunium · americium · uranium · curium · protactinium · fermium · californium · thorium · einsteinium · berkelium · plutonium
Translations (18)
fi aktinoidi (one of a group of radioactive elements) · af aktinied (one of a group of radioactive elements) · cmn 錒系元素 /锕系元素 (one of a group of radioactive elements) · de Actiniden (one of a group of radioactive elements) · hi एजातेय (one of a group of radioactive elements) · ja アクチノイド (one of a group of radioactive elements) · hu aktinoida (one of a group of radioactive elements) · kk актиноид (one of a group of radioactive elements) · sh актинид (one of a group of radioactive elements) · ro actinid (one of a group of radioactive elements) · cs aktinoid (one of a group of radioactive elements) · es actínido (one of a group of radioactive elements) · ca actínid (one of a group of radioactive elements) · el ακτινίδιο (one of a group of radioactive elements) · pl aktynowiec (one of a group of radioactive elements) · cs aktinid (one of a group of radioactive elements) · sh aktinid (one of a group of radioactive elements) · it attinoide (one of a group of radioactive elements)