| MINIUMS | • miniums n. Plural of minium. • MINIUM n. (Latin) a red pigment.
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| ACTINIUMS | • actiniums n. Plural of actinium. • ACTINIUM n. a radioactive metallic chemical element, atomic number 89, the first element of the actinide series.
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| DOMINIUMS | • DOMINIUM n. (Latin) the right of ownership and control of property. | 
| ILLINIUMS | • ILLINIUM n. a former name for the element promethium. | 
| ALUMINIUMS | • aluminiums n. Plural of aluminium. • ALUMINIUM n. a light silvery malleable and ductile metallic element, also ALUMINUM, ALUMIUM.
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| GLUCINIUMS | • GLUCINIUM n. a former name for beryllium, also GLUCINUM. | 
| UREDINIUMS | • UREDINIUM n. a uredosorus, a sorus or pustule in which urediniospores are formed, also UREDIUM. | 
| VACCINIUMS | • vacciniums n. Plural of vaccinium. • VACCINIUM n. (Latin) a genus of ericaceous shrubs including the various kinds of blueberries and the true cranberries.
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| VIRGINIUMS | • VIRGINIUM n. a name proposed for chemical element no 87, now called francium. | 
| DELPHINIUMS | • delphiniums n. Plural of delphinium. • DELPHINIUM n. a genus of garden flower, comprising larkspur and stavesacre.
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| GADOLINIUMS | • gadoliniums n. Plural of gadolinium. • GADOLINIUM n. a rare metallic element found associated with yttrium and other rare metals.
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| LENOCINIUMS | • LENOCINIUM n. in Scots law, connivance at one's wife's adultery. | 
| PERIDINIUMS | • PERIDINIUM n. a dinoflagellate, a kind of marine protozoan, also PERIDINIAN. | 
| TIROCINIUMS | • TIROCINIUM n. early training; first experience. | 
| CONDOMINIUMS | • condominiums n. Plural of condominium. • CONDOMINIUM n. (US) a block of apartments in which each apartment is separately owned.
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| EINSTEINIUMS | • EINSTEINIUM n. a radioactive element produced artificially. | 
| TRIDOMINIUMS | • tridominiums n. Plural of tridominium. • TRIDOMINIUM n. (Latin) threefold rule.
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| DURALUMINIUMS | • DURALUMINIUM n. a strong, light, aluminium alloy containing copper, also DURAL, DURALUMIN. | 
| PROTACTINIUMS | • PROTACTINIUM n. a radioactive metallic chemical element, a member of the actinide series which occurs as a decay product in uranium ores. | 
| PROTOACTINIUMS | • PROTOACTINIUM n. a radioactive element that yields actinium on disintegration. |