List of 13-letter words ending with

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There are 8 thirteen-letter words ending with NIUMS

BIMILLENNIUMS	• BIMILLENNIUM n. (Latin) a period of two thousand years.
CUPRAMMONIUMS	• cuprammoniums n. Plural of cuprammonium. • CUPRAMMONIUM n. a solution of cupric hydroxide in ammonia.
DURALUMINIUMS	• DURALUMINIUM n. a strong, light, aluminium alloy containing copper, also DURAL, DURALUMIN.
PANDAEMONIUMS	• PANDAEMONIUM n. riotous uproar, also PANDEMONIUM.
PANHELLENIUMS	• PANHELLENIUM n. a council representing all the sections of the Greeks, also PANHELLENION.
PROTACTINIUMS	• PROTACTINIUM n. a radioactive metallic chemical element, a member of the actinide series which occurs as a decay product in uranium ores.
QUADRIENNIUMS	• QUADRIENNIUM n. (Latin) a period of four years, also QUADRENNIUM.
QUINQUENNIUMS	• quinquenniums n. Plural of quinquennium. • QUINQUENNIUM n. a period of five years, also QUINQUENNIAD.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the 1Word.ws and WikWik.org.

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English Wiktionary: 17 words
Scrabble in French: 1 word
Scrabble in Spanish: no word
Scrabble in Italian: no word
Scrabble in German: no word
Scrabble in Romanian: no word

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