actinide

English

Etymology

From actin- +‎ -ide.

Pronunciation

• enPR: ăk'tĭnīd, IPA^(key): /ˈæktɪnaɪd/

• Audio (Southern England):

  (file)

Noun

actinide (plural actinides)

1. (chemistry) 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.
2. (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).
3. (chemistry) (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).

Derived terms

• actinidic
• nonactinide
• organoactinide
• radioactinide
• superactinide
• transactinide

 

Translations

one of a group of radioactive elements

• Afrikaans: aktinied (af)
• Catalan: actínid m
• Chinese:

  Mandarin: 錒系元素／锕系元素 (zh) (āxì yuánsù)

• Czech: aktinid, aktinoid (cs)
• Finnish: aktinoidi (fi)
• Greek: ακτινίδιο (el) n (aktinídio)
• Hindi: एजातेय ? (ejātey)
• Hungarian: aktinoida (hu)
• Italian: attinoide m
• Japanese: アクチノイド (ja) (akuchinoido)
• Polish: aktynowiec (pl) m
• Romanian: actinid n
• Serbo-Croatian:

  Cyrillic: актинид m

  Roman: aktinid m

• Spanish: actínido (es) m

See also

• actinide on Wikipedia.Wikipedia

• actinium
• thorium
• protactinium
• uranium
• neptunium
• plutonium
• americium
• curium
• berkelium
• californium
• einsteinium
• fermium
• mendelevium
• nobelium
• lawrencium

Anagrams

• Dianetic, indicate, anticide, ctenidia, diactine, dianetic

French

Pronunciation

• IPA^(key): /ak.ti.nid/

• Audio (Paris):

  (file)

• Audio:

  (file)

Noun

actinide m (plural actinides)

1. actinide