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75 Nouns That End With RIUM

Part of Speech:
Word Definitions Synonyms
anthurium (noun) any of various tropical American plants cultivated for their showy foliage and flowers Synonyms: tail-flower, tailflower
aquarium (noun) a tank or pool or bowl filled with water for keeping live fish and underwater animals Synonyms: fish tank, marine museum
archaebacterium (noun) considered ancient life forms that evolved separately from bacteria and blue-green algae Synonyms: archaebacteria, archaeobacteria, archeobacteria
archesporium (noun) primitive cell or group of cells from which a mother cell develops Synonyms: archespore
armamentarium (noun) the collection of equipment and methods used in the practice of medicine
aspersorium (noun) the basin or other vessel that holds holy water in Roman Catholic Churches
(noun) a short-handled device with a globe containing a sponge; used for sprinkling holy water Synonyms: aspergill
atrium (noun) the central area in a building; open to the sky
(noun) any chamber that is connected to other chambers or passageways (especially one of the two upper chambers of the heart)
auditorium (noun) the area of a theater or concert hall where the audience sits
bacterium (noun) (microbiology) single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission; important as pathogens and for biochemical properties; taxonomy is difficult; often considered to be plants Synonyms: bacteria
barium (noun) a soft silvery metallic element of the alkali earth group; found in barite Synonyms: atomic number 56, Ba
bohrium (noun) a transuranic element with atomic number 107 Synonyms: atomic number 107, Bh, element 107
cerium (noun) a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group Synonyms: atomic number 58, Ce
cinerarium (noun) a niche for a funeral urn containing the ashes of the cremated dead Synonyms: columbarium
collyrium (noun) lotion consisting of a solution used as a cleanser for the eyes Synonyms: eye-lotion, eyewash
columbarium (noun) a sepulchral vault or other structure having recesses in the walls to receive cinerary urns
(noun) a niche for a funeral urn containing the ashes of the cremated dead Synonyms: cinerarium
(noun) a birdhouse for pigeons Synonyms: columbary, dovecote
corium (noun) the deep vascular inner layer of the skin Synonyms: derma, dermis
corynebacterium (noun) any species of the genus Corynebacterium
crematorium (noun) a furnace where a corpse can be burned and reduced to ashes Synonyms: cremation chamber, crematory
(noun) a mortuary where corpses are cremated Synonyms: crematory
criterium (noun) a bicycle race held on a short course (usually less than 5 km or 3 miles) Synonyms: crit
curium (noun) a radioactive transuranic metallic element; produced by bombarding plutonium with helium nuclei Synonyms: atomic number 96, Cm
delirium (noun) a usually brief state of excitement and mental confusion often accompanied by hallucinations
(noun) state of violent mental agitation Synonyms: craze, frenzy, fury, hysteria
deuterium (noun) an isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen) Synonyms: heavy hydrogen
disequilibrium (noun) loss of equilibrium attributable to an unstable situation in which some forces outweigh others
emporium (noun) a large retail store organized into departments offering a variety of merchandise; commonly part of a retail chain Synonyms: department store
emunctorium (noun) a white linen cloth which is used to wipe the chalice after each communicant partakes. Synonyms: purificator, purificatorium
endometrium (noun) (pregnancy) the mucous membrane that lines the uterus; thickens under hormonal control and (if pregnancy does not occur) is shed in menstruation; if pregnancy occurs it is shed along with the placenta at parturition
endoneurium (noun) delicate connective tissue around individual nerve fibers in nerve
epigastrium (noun) the region lying on or over the stomach (just below the sternum)
equilibrium (noun) a sensory system located in structures of the inner ear that registers the orientation of the head Synonyms: labyrinthine sense, sense of balance, sense of equilibrium, vestibular sense
(noun) a chemical reaction and its reverse proceed at equal rates Synonyms: chemical equilibrium
(noun) equality of distribution Synonyms: balance, counterbalance, equipoise
(noun) a stable situation in which forces cancel one another
eubacterium (noun) a large group of bacteria having rigid cell walls; motile types have flagella Synonyms: eubacteria, true bacteria
ferrocerium (noun) a pyrophoric alloy of iron with cerium; used for lighter flints
halobacterium (noun) halophiles in saline environments such as the Dead Sea or salt flats Synonyms: halobacter, halobacteria
haustorium (noun) a root-like attachment in parasitic plants that penetrates and obtains food from the host
herbarium (noun) a collection of dried plants that are mounted and systematically classified for study
honorarium (noun) a fee paid for a nominally free service
hypochondrium (noun) the upper region of the abdomen just below the lowest ribs on either side of the epigastrium
imperium (noun) supreme authority; absolute dominion
(noun) the domain ruled by an emperor or empress; the region over which imperial dominion is exercised Synonyms: empire
manubrium (noun) the upper part of the breastbone
meitnerium (noun) a radioactive transuranic element, with atomic number 109 Synonyms: atomic number 109, element 109, Mt
moratorium (noun) suspension of an ongoing activity
(noun) a legally authorized postponement before some obligation must be discharged
mycobacterium (noun) rod-shaped bacteria some saprophytic or causing diseases Synonyms: mycobacteria
myometrium (noun) the smooth muscle forming the wall of the uterus
myxobacterium (noun) bacteria that form colonies in self-produced slime; inhabit moist soils or decaying plant matter or animal waste Synonyms: gliding bacteria, myxobacter, myxobacteria, slime bacteria
natatorium (noun) pool that provides a facility for swimming Synonyms: swimming bath, swimming pool
nitrobacterium (noun) any of the bacteria in the soil that take part in the nitrogen cycle; they oxidize ammonium compounds into nitrites or oxidize nitrites into nitrates
opprobrium (noun) a state of extreme dishonor Synonyms: infamy
(noun) state of disgrace resulting from public abuse Synonyms: obloquy
ostensorium (noun) (Roman Catholic Church) a vessel (usually of gold or silver) in which the consecrated Host is exposed for adoration Synonyms: monstrance
perineurium (noun) the sheath of connective tissue that covers a bundle of nerve fibers
phoenicophorium (noun) latanier palm Synonyms: genus Phoenicophorium
planetarium (noun) an apparatus or model for representing the solar systems
(noun) an optical device for projecting images of celestial bodies and other astronomical phenomena onto the inner surface of a hemispherical dome
(noun) a building housing an instrument for projecting the positions of the planets onto a domed ceiling
praetorium (noun) the tent of an ancient Roman general Synonyms: pretorium
pretorium (noun) the tent of an ancient Roman general Synonyms: praetorium
psalterium (noun) the third compartment of the stomach of a ruminant Synonyms: omasum, third stomach
puerperium (noun) time period following childbirth when the mother's uterus shrinks and the other functional and anatomic changes of pregnancy are resolved
purificatorium (noun) a white linen cloth which is used to wipe the chalice after each communicant partakes. Synonyms: emunctorium, purificator
radiothorium (noun) radioactive isotope of thorium with mass number 228 Synonyms: thorium-228
samarium (noun) a grey lustrous metallic element of the rare earth group; is used in special alloys; occurs in monazite and bastnasite Synonyms: atomic number 62, Sm
sanatarium (noun) a hospital for recuperation or for the treatment of chronic diseases Synonyms: sanatorium, sanitarium
sanatorium (noun) a hospital for recuperation or for the treatment of chronic diseases Synonyms: sanatarium, sanitarium
(noun) pejorative terms for an insane asylum Synonyms: Bedlam, booby hatch, crazy house, cuckoo's nest, funny farm, funny house, loony bin, madhouse, nut house, nuthouse, snake pit
sanitarium (noun) a hospital for recuperation or for the treatment of chronic diseases Synonyms: sanatarium, sanatorium
scolopendrium (noun) a fern thought to resemble a millipede
scriptorium (noun) a room in a monastery that is set aside for writing or copying manuscripts
sensorium (noun) the areas of the brain that process and register incoming sensory information and make possible the conscious awareness of the world
sericterium (noun) silk-producing gland of insects (especially of a silkworm) or spiders Synonyms: serictery, silk gland
solarium (noun) a room enclosed largely with glass and affording exposure to the sun Synonyms: sun lounge, sun parlor, sun parlour, sun porch, sunporch, sunroom
sudatorium (noun) a bathhouse for hot air baths or steam baths Synonyms: sudatory
tellurium (noun) a brittle silver-white metalloid element that is related to selenium and sulfur; it is used in alloys and as a semiconductor; occurs mainly as tellurides in ores of copper and nickel and silver and gold Synonyms: atomic number 52, Te
tentorium (noun) (anatomy) a fold of dura mater that covers the cerebellum and supports the occipital lobes of the cerebrum
terrarium (noun) a vivarium in which selected living plants are kept and observed
thorium (noun) a soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands Synonyms: atomic number 90, Th
ununtrium (noun) a radioactive transuranic element, with atomic number 113 Synonyms: atomic number 113, element 113, Uut
vitellarium (noun) A modified part of the ovary that in many flatworms and rotifers produces yolk-filled cells serving to nourish the true eggs.
vivarium (noun) an indoor enclosure for keeping and raising living animals and plants and observing them under natural conditions
yttrium (noun) a silvery metallic element that is common in rare-earth minerals; used in magnesium and aluminum alloys Synonyms: atomic number 39, Y
zoarium (noun) a colony of zooids.

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