Words Ending in IUM

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15 letter words (7 words)
CRYPTOSPORIDIUM​27
CORYNEBACTERIUM​26
ARCHAEBACTERIUM​26
ENTEROBACTERIUM​21
MACROSPORANGIUM​24
MICROSPORANGIUM​24
TETRASPORANGIUM​20
14 letter words (12 words)
DISEQUILIBRIUM​28
NONEQUILIBRIUM​27
CONSERVATORIUM​21
CYANOBACTERIUM​25
CHONDROCRANIUM​24
CLAVICYTHERIUM​29
DISCIPLINARIUM​21
MEGASPORANGIUM​22
NITROBACTERIUM​20
RADIOSTRONTIUM​17
SCEUOPHYLACIUM​28
SPERMATOGONIUM​21
13 letter words (24 words)
MYCOBACTERIUM​26
ARMAMENTARIUM​19
HEXAMETHONIUM​30
ACARIDOMATIUM​20
ACARODOMATIUM​20
ACTINOURANIUM​17
AMPHIGASTRIUM​23
ANTICLINORIUM​17
DECAMETHONIUM​23
EVANGELIARIUM​19
FERROCHROMIUM​25
HYPOCHONDRIUM​29
INCLINATORIUM​17
LECTISTERNIUM​17
PERICHONDRIUM​23
PLATINIRIDIUM​18
PROTOACTINIUM​19
PYCNOCONIDIUM​25
RUTHERFORDIUM​22
SCOLOPENDRIUM​20
12 letter words (47 words)
VERTICILLIUM​19
PRASEODYMIUM​22
CLADOSPORIUM​19
PROTACTINIUM​18
TRANSURANIUM​14
PANDAEMONIUM​19
AMPHITHECIUM​26
ANDROCLINIUM​17
APPRESSORIUM​18
ARCHESPORIUM​21
BIMILLENNIUM​18
CUPRAMMONIUM​22
DARMSTADTIUM​18
DEINOTHERIUM​18
DOLPHINARIUM​20
DURALUMINIUM​17
EPITHALAMIUM​21
EVANGELARIUM​18
HYPOGASTRIUM​23
INHALATORIUM​17
11 letter words (96 words)
EQUILIBRIUM​24
CONDOMINIUM​18
PLANETARIUM​15
ENDOTHELIUM​17
CLOSTRIDIUM​16
PANDEMONIUM​18
CREMATORIUM​17
ENDOMETRIUM​16
SCRIPTORIUM​17
PENICILLIUM​17
MAGISTERIUM​16
IPRATROPIUM​17
PERICARDIUM​18
PELARGONIUM​16
TETRAZOLIUM​22
CYPRIPEDIUM​23
COLUMBARIUM​19
FLORILEGIUM​17
MINISTERIUM​15
CALIFORNIUM​18
10 letter words (106 words)
MILLENNIUM​14
CONSORTIUM​14
AUDITORIUM​13
COMPENDIUM​19
COLLOQUIUM​23
MORATORIUM​14
EPITHELIUM​17
PLASMODIUM​17
MYOCARDIUM​20
TECHNETIUM​17
DENDROBIUM​16
DELPHINIUM​18
HONORARIUM​15
GADOLINIUM​14
SANITARIUM​12
SANATORIUM​12
MONOSODIUM​15
HOROLOGIUM​16
PROSCENIUM​16
PARAMECIUM​18
9 letter words (118 words)
SYMPOSIUM​18
ALUMINIUM​13
POTASSIUM​13
MAGNESIUM​14
GYMNASIUM​17
PALLADIUM​14
PLUTONIUM​13
BACTERIUM​15
HERBARIUM​16
BERYLLIUM​16
ZIRCONIUM​22
STRONTIUM​11
DEUTERIUM​12
GERMANIUM​14
NEODYMIUM​17
EUPHONIUM​16
COLLEGIUM​14
RUTHENIUM​14
CRITERIUM​13
HARMONIUM​16
8 letter words (107 words)
TITANIUM​10
AQUARIUM​19
EMPORIUM​14
CHROMIUM​17
AMMONIUM​14
SELENIUM​10
SOLARIUM​10
GERANIUM​11
DELIRIUM​11
BIENNIUM​12
VANADIUM​14
TRILLIUM​10
IMPERIUM​14
FUSARIUM​13
PSYLLIUM​15
THALLIUM​13
DISODIUM​12
ALLUVIUM​13
RUBIDIUM​13
MYCELIUM​17
7 letter words (51 words)
PREMIUM​13
STADIUM​10
CALCIUM​13
LITHIUM​12
URANIUM​9
TRIVIUM​12
CADMIUM​14
RHODIUM​13
IRIDIUM​10
TRITIUM​9
CRANIUM​11
GALLIUM​10
THORIUM​12
NIOBIUM​11
YTTRIUM​12
RHENIUM​12
HAFNIUM​15
CAMBIUM​15
PYTHIUM​17
CAESIUM​11
6 letter words (38 words)
MEDIUM​11
SODIUM​9
VALIUM​11
HELIUM​11
ATRIUM​8
PODIUM​11
BARIUM​10
RADIUM​9
CESIUM​10
INDIUM​9
ALLIUM​8
XENIUM​15
OMNIUM​10
TEDIUM​9
CERIUM​10
OSMIUM​10
ERBIUM​10
LOLIUM​8
MINIUM​10
CURIUM​10
5 letter words (4 words)
OPIUM​9
ILIUM​7
ODIUM​8
ONIUM​7
4 letter words
PIUM​8


Using the word finder we have pulled together a list of all the words ending with IUM – in this case we have 611 words.

On average, these words score 15.8 points in a game of Scrabble or Words With Friends.

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87 of the words ending in IUM, start with the letter P. That makes P the most common starting letter for words that end with the letters IUM.

You can find our category page showing all the curated lists of words ending in IUM all the letters of the alphabet.

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