List of 10-letter words ending with

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There are 18 ten-letter words ending with NIUM

ASCOGONIUM	• ascogonium n. (Mycology) The spiral female organ of an ascomycetous fungus from which asci are produced. • ASCOGONIUM n. the female reproductive structure of fungi.
CHARMONIUM	• charmonium n. (Physics) Any meson formed from a charm quark and its antiquark. • CHARMONIUM n. any of various elementary particles consisting of a charm quark and an antiquark.
DELPHINIUM	• delphinium n. (Countable) A cultivated plant, belonging to the genus Delphinium, with tall blue-colored spikes containing flowers. • delphinium n. (Countable and uncountable) A shade of blue, named for the flowers. • Delphinium prop.n. A taxonomic genus within the family Ranunculaceae – a few hundred species of annual, biennial or perennial…
DIAMMONIUM	• diammonium n. (Inorganic chemistry) Two ammonium ions in a compound.
EPICRANIUM	• epicranium n. (Anatomy) The upper and superficial part of the head, including the scalp, muscles, etc. • epicranium n. (Zoology) The dorsal wall of the head of insects. • EPICRANIUM n. the medical term for the collection of structures covering the cranium.
GADOLINIUM	• gadolinium n. A chemical element (symbol Gd) with atomic number 64: a ductile silvery-white metal. • GADOLINIUM n. a rare metallic element found associated with yttrium and other rare metals.
LENOCINIUM	• lenocinium n. (Scotland, law) A husband’s connivance at his wife’s adultery. • LENOCINIUM n. in Scots law, connivance at one's wife's adultery.
MILLENNIUM	• millennium n. A period of time consisting of one thousand years. • millennium n. (Christianity) The period of one thousand years during which Christ will reign on earth (according to… • millennium n. A period of universal happiness, peace or prosperity; a utopia.
PERIDINIUM	• Peridinium prop.n. A taxonomic genus within the family Peridiniaceae – certain dinoflagellates. • PERIDINIUM n. a dinoflagellate, a kind of marine protozoan, also PERIDINIAN.
PERIGONIUM	• perigonium n. (Botany) The sterile parts of a flower; collectively, the sepals and petals (or tepals); the perianth. • perigonium n. (Botany) The modified leaves around the antheridia in a bryophytic plant. • perigonium n. (Dated, zoology) The wall of the sporosac in a hydroid.
POLEMONIUM	• polemonium n. Any of the genus Polemonium of gamopetalous perennial herbs. • Polemonium prop.n. A taxonomic genus within the family Polemoniaceae – Jacob’s ladder and related flowering plants. • POLEMONIUM n. a genus of gamopetalous perennial herbs, including the Jacob's ladder and the Greek valerian.
PROSCENIUM	• proscenium n. (In a modern theater) The stage area between the curtain and the orchestra. • proscenium n. (In an ancient theater) The stage area immediately in front of the scene building. • proscenium n. (In an ancient theater) The row of columns at the front the scene building, at first directly behind…
SEPTENNIUM	• septennium n. A period of seven years. • SEPTENNIUM n. a period of seven years.
SPARGANIUM	• sparganium n. (Botany) Any of the plants of the genus Sparganium. • Sparganium prop.n. A taxonomic genus within the family Typhaceae – the bur-reeds. • SPARGANIUM n. a plant of the bur-reed genus.
STRAMONIUM	• stramonium n. The jimsonweed plant. • stramonium n. A narcotic drug obtained from the dried leaves of this plant. • Stramonium prop.n. (Archaic) A taxonomic genus within the family Solanaceae – possibly only consisting of the species now…
SULPHONIUM	• sulphonium n. Alternative spelling of sulfonium. • SULPHONIUM n. the positively charged group SH3, its salts or derivatives, also SULFONIUM.
TIROCINIUM	• tirocinium n. Schooling, apprenticeship; novitiate. • TIROCINIUM n. early training; first experience.
TRICLINIUM	• triclinium n. (Historical, Roman antiquity) A couch for reclining at mealtimes, extending round three sides of a table… • triclinium n. (Historical, Roman antiquity) A dining room furnished with such a triple couch. • TRICLINIUM n. (Latin) a couch for reclining at meals, extending round three sides of a table, and usually in three parts.

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 WikWik.org and 1Word.ws.

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English Wiktionary: 71 words
Scrabble in French: 6 words
Scrabble in Spanish: no word
Scrabble in Italian: no word
Scrabble in German: no word
Scrabble in Romanian: 2 words

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