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There are 14 thirteen-letter words containing NIU
| ACTINOURANIUM | • actinouranium n. Alternative spelling of actino-uranium. • actino-uranium n. Uranium-235. • ACTINOURANIUM n. the isotope of uranium that has a mass number of 235. |
| 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. |
| DECAMETHONIUM | • decamethonium n. (Pharmacology) Synonym of decamethonium bromide. • DECAMETHONIUM n. a type of muscle relaxant. |
| DURALUMINIUMS | • DURALUMINIUM n. a strong, light, aluminium alloy containing copper, also DURAL, DURALUMIN. |
| HARMONIUMISTS | • harmoniumists n. Plural of harmoniumist. • HARMONIUMIST n. one who plays the harmonium. |
| HEXAMETHONIUM | • hexamethonium n. (Pharmacology) Synonym of hexamethonium bromide. • HEXAMETHONIUM n. either of two compounds used as ganglionic blocking agents in the treatment of hypertension. |
| LECTISTERNIUM | • lectisternium n. (Historical) An ancient "feast of the gods", at which images of the gods were set on couches around a feast table. • LECTISTERNIUM n. (Latin) an ancient Greek/Roman religious rite in which the images of gods were placed on couches and food spread before them. |
| 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. |
| PROTOACTINIUM | • protoactinium n. Dated form of protactinium. • PROTOACTINIUM n. a radioactive element that yields actinium on disintegration. |
| 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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See this list for:
- English Wiktionary: 104 words
- Scrabble in French: 2 words
- Scrabble in Spanish: no word
- Scrabble in Italian: 8 words
- Scrabble in German: no word
- Scrabble in Romanian: 23 words
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