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We found one dictionary that defines the word eka-actinium:

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  1. eka-actinium: Wiktionary

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Definitions from Wiktionary (eka-actinium)

▸ noun:  (chemistry) unbiunium (element 121)
▸ noun:  (chemistry) untriennium (dvi-lanthanum) (element 139)

Similar:
eka-protactinium, superactinide, actinate, diprotactinium, bismuthonium, actinide, organoactinide, imidonium, actinoid, hexabarium, more...

Opposite:
none

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Similar:
eka-protactinium, superactinide, actinate, diprotactinium, bismuthonium, actinide, organoactinide, imidonium, actinoid, hexabarium, more...

Opposite:
none



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