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12-Letter Words That End With: NIUM

There are 14 12 letter words, 8 12 letter phrases and 0 12 letter abbr's that end with NIUM.

Best Scoring 12 Letter Words Ending: NIUM

Expand?WordSave?LengthUsagePointsType
quinquennium12
32 nounn
noun

• a period of five years

spermagonium12
19 nounn
Valid word for Scrabble US
protactinium12
18 nounn
noun

• a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead

transuranium12
14 noun, adjectiven, adj
Valid word for Scrabble US
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Tip: Scrabble EU allows far more words than US! Also change the max length to see more words.

All 12 Letter Words Ending With NIUM

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