actinium | (noun) a radioactive element of the actinide series; found in uranium ores | Synonyms: Ac, atomic number 89 |
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aecium | (noun) fruiting body of some rust fungi bearing chains of aeciospores | - |
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alluvium | (noun) clay or silt or gravel carried by rushing streams and deposited where the stream slows down | Synonyms: alluvial deposit, alluvial sediment, alluvion |
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aluminium | (noun) a silvery ductile metallic element found primarily in bauxite | Synonyms: Al, aluminum, atomic number 13 |
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americium | (noun) a radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms | Synonyms: Am, atomic number 95 |
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ammobium | (noun) any plant of the genus Ammobium having yellow flowers and silvery foliage | - |
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ammonium | (noun) the ion NH4 derived from ammonia; behaves in many respects like an alkali metal ion | Synonyms: ammonium ion |
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androecium | (noun) a male gametoecium | - |
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antheridium | (noun) the male sex organ of spore-producing plants; produces antherozoids; equivalent to the anther in flowers | - |
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anthurium | (noun) any of various tropical American plants cultivated for their showy foliage and flowers | Synonyms: tail-flower, tailflower |
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apothecium | (noun) a cuplike ascocarp in many lichens and ascomycetous fungi | - |
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aquarium | (noun) a tank or pool or bowl filled with water for keeping live fish and underwater animals | Synonyms: fish tank, marine museum |
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archaebacterium | (noun) considered ancient life forms that evolved separately from bacteria and blue-green algae | Synonyms: archaebacteria, archaeobacteria, archeobacteria |
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archegonium | (noun) a female sex organ occurring in mosses, ferns, and most gymnosperms | - |
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archesporium | (noun) primitive cell or group of cells from which a mother cell develops | Synonyms: archespore |
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archipallium | (noun) the olfactory cortex of the cerebrum | Synonyms: paleocortex |
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armamentarium | (noun) the collection of equipment and methods used in the practice of medicine | - |
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aspersorium | (noun) the basin or other vessel that holds holy water in Roman Catholic Churches | - |
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(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 | - |
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(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 | - |
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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 |
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barium | (noun) a soft silvery metallic element of the alkali earth group; found in barite | Synonyms: atomic number 56, Ba |
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basidium | (noun) a small club-shaped structure typically bearing four basidiospores at the ends of minute projections; unique to basidiomycetes | - |
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bdellium | (noun) aromatic gum resin; similar to myrrh | - |
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berkelium | (noun) a radioactive transuranic element; discovered by bombarding americium with helium | Synonyms: atomic number 97, Bk |
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beryllium | (noun) a light strong brittle grey toxic bivalent metallic element | Synonyms: atomic number 4, Be, glucinium |
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bimillennium | (noun) a span of 2000 years | Synonyms: bimillenary |
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(noun) the 2000th anniversary (or the celebration of it) | Synonyms: bimillenary |
bohrium | (noun) a transuranic element with atomic number 107 | Synonyms: atomic number 107, Bh, element 107 |
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brachium | (noun) (biology) a branching or armlike part of an animal | - |
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cadmium | (noun) a soft bluish-white ductile malleable toxic bivalent metallic element; occurs in association with zinc ores | Synonyms: atomic number 48, Cd |
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caesium | (noun) a soft silver-white ductile metallic element (liquid at normal temperatures); the most electropositive and alkaline metal | Synonyms: atomic number 55, cesium, Cs |
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caladium | (noun) any plant of the genus Caladium cultivated for their ornamental foliage variously patterned in white or pink or red | - |
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calcium | (noun) a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals | Synonyms: atomic number 20, Ca |
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californium | (noun) a radioactive transuranic element; discovered by bombarding curium with alpha particles | Synonyms: atomic number 98, Cf |
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cambium | (noun) the inner layer of the periosteum | - |
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(noun) a formative one-cell layer of tissue between xylem and phloem in most vascular plants that is responsible for secondary growth | - |
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 |
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cesium | (noun) a soft silver-white ductile metallic element (liquid at normal temperatures); the most electropositive and alkaline metal | Synonyms: atomic number 55, caesium, Cs |
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chromium | (noun) a hard brittle multivalent metallic element; resistant to corrosion and tarnishing | Synonyms: atomic number 24, Cr |
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cilium | (noun) a hairlike projection from the surface of a cell; provides locomotion in free-swimming unicellular organisms | - |
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(noun) any of the short curved hairs that grow from the edges of the eyelids | Synonyms: eyelash, lash |
cinerarium | (noun) a niche for a funeral urn containing the ashes of the cremated dead | Synonyms: columbarium |
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cleistothecium | (noun) closed spore-bearing structure of some fungi (especially Aspergillaceae and Erysiphaceae) from which spores are released only by decay or disintegration | Synonyms: cleistocarp |
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clostridium | (noun) spindle-shaped bacterial cell especially one swollen at the center by an endospore | Synonyms: clostridia |
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coccidium | (noun) parasitic on the digestive epithelium of vertebrates and higher invertebrates | Synonyms: eimeria |
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colloquium | (noun) an address to an academic meeting or seminar | - |
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(noun) an academic meeting or seminar usually led by a different lecturer and on a different topic at each meeting | - |
collyrium | (noun) lotion consisting of a solution used as a cleanser for the eyes | Synonyms: eye-lotion, eyewash |
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columbarium | (noun) a sepulchral vault or other structure having recesses in the walls to receive cinerary urns | - |
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(noun) a niche for a funeral urn containing the ashes of the cremated dead | Synonyms: cinerarium |
(noun) a birdhouse for pigeons | Synonyms: columbary, dovecote |
columbium | (noun) a former name for niobium | - |
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compendium | (noun) a concise but comprehensive summary of a larger work | - |
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(noun) a publication containing a variety of works | Synonyms: collection |
condominium | (noun) housing consisting of a complex of dwelling units (as an apartment house) in which each unit is individually owned | - |
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(noun) one of the dwelling units in a condominium | Synonyms: condo |
conidium | (noun) an asexually produced fungal spore formed on a conidiophore | Synonyms: conidiospore |
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consortium | (noun) an association of companies for some definite purpose | Synonyms: pool, syndicate |
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corium | (noun) the deep vascular inner layer of the skin | Synonyms: derma, dermis |
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corynebacterium | (noun) any species of the genus Corynebacterium | - |
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cranium | (noun) the part of the skull that encloses the brain | Synonyms: braincase, brainpan |
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crematorium | (noun) a furnace where a corpse can be burned and reduced to ashes | Synonyms: cremation chamber, crematory |
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(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 |
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ctenidium | (noun) comb-like respiratory structure serving as the gill of certain mollusks | - |
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curium | (noun) a radioactive transuranic metallic element; produced by bombarding plutonium with helium nuclei | Synonyms: atomic number 96, Cm |
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cymatium | (noun) (architecture) a molding for a cornice; in profile it is shaped like an S (partly concave and partly convex) | Synonyms: cyma |
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cymbidium | (noun) any of various plants of the genus Cymbidium having narrow leaves and a long drooping cluster of numerous showy and variously colored boat-shaped flowers; extensively hybridized and cultivated as houseplants and important florists' flowers | Synonyms: cymbid |
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darmstadtium | (noun) a radioactive transuranic element, with atomic number 110 | Synonyms: atomic number 110, Ds, element 110 |
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decennium | (noun) a period of 10 years | Synonyms: decade, decennary |
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deliquium | (noun) a spontaneous loss of consciousness caused by insufficient blood to the brain | Synonyms: faint, swoon, syncope |
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delirium | (noun) a usually brief state of excitement and mental confusion often accompanied by hallucinations | - |
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(noun) state of violent mental agitation | Synonyms: craze, frenzy, fury, hysteria |
delphinium | (noun) any plant of the genus Delphinium having palmately divided leaves and showy spikes of variously colored spurred flowers; some contain extremely poisonous substances | - |
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dendrobium | (noun) a plant of the genus Dendrobium having stems like cane and usually showy racemose flowers | - |
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deuterium | (noun) an isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen) | Synonyms: heavy hydrogen |
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diazonium | (noun) the univalent cation R-N:N- (where R is an aromatic hydrocarbon); found in salts that are used in manufacturing azo dyes | - |
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dictostylium | (noun) any slime mold of the genus Dictostylium | - |
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disequilibrium | (noun) loss of equilibrium attributable to an unstable situation in which some forces outweigh others | - |
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domatium | (noun) a part of a plant (e.g., a leaf) that has been modified to provide protection for insects or mites or fungi | - |
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dracontium | (noun) any plant of the genus Dracontium; strongly malodorous tropical American plants usually with gigantic leaves | - |
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dubnium | (noun) a transuranic element with atomic number 105 | Synonyms: atomic number 105, Db, element 105, hahnium |
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dysprosium | (noun) a trivalent metallic element of the rare earth group; forms compounds that are highly magnetic | Synonyms: atomic number 66, Dy |
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effluvium | (noun) a foul-smelling outflow or vapor (especially a gaseous waste) | - |
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einsteinium | (noun) a radioactive transuranic element produced by bombarding plutonium with neutrons | Synonyms: atomic number 99, E, Es |
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emporium | (noun) a large retail store organized into departments offering a variety of merchandise; commonly part of a retail chain | Synonyms: department store |
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emunctorium | (noun) a white linen cloth which is used to wipe the chalice after each communicant partakes. | Synonyms: purificator, purificatorium |
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encomium | (noun) a formal expression of praise | Synonyms: eulogy, paean, panegyric, pean |
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endocardium | (noun) the membrane that lines the cavities of the heart and forms part of the heart valves | - |
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endocranium | (noun) membrane lining the inside of the skull | - |
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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 | - |
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endoneurium | (noun) delicate connective tissue around individual nerve fibers in nerve | - |
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endothelium | (noun) an epithelium of mesoblastic origin; a thin layer of flattened cells that lines the inside of some body cavities | - |
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epicardium | (noun) the innermost of the two layers of the pericardium | Synonyms: visceral pericardium |
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epicranium | (noun) the muscle and aponeurosis and skin covering the cranium | - |
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epigastrium | (noun) the region lying on or over the stomach (just below the sternum) | - |
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epimythium | (noun) a moral at the end of a story. | - |
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epithalamium | (noun) an ode honoring a bride and bridegroom | - |
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epithelium | (noun) membranous tissue covering internal organs and other internal surfaces of the body | Synonyms: epithelial tissue |
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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 |
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(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 | - |
erbium | (noun) a trivalent metallic element of the rare earth group; occurs with yttrium | Synonyms: atomic number 68, Er |
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eubacterium | (noun) a large group of bacteria having rigid cell walls; motile types have flagella | Synonyms: eubacteria, true bacteria |
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eulogium | (noun) a formal expression of praise for someone who has died recently | Synonyms: eulogy |
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euphonium | (noun) a bass horn (brass wind instrument) that is the tenor of the tuba family | - |
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euphorbium | (noun) an acrid brown gum resin now used mainly in veterinary medicine | Synonyms: gum eurphorbium |
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europium | (noun) a bivalent and trivalent metallic element of the rare earth group | Synonyms: atomic number 63, Eu |
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eusporangium | (noun) a sporangium that arises from a group of epidermal cells | - |
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exordium | (noun) (rhetoric) the introductory section of an oration or discourse | - |
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fermium | (noun) a radioactive transuranic metallic element produced by bombarding plutonium with neutrons | Synonyms: atomic number 100, Fm |
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