| OSMIUMS | • osmiums n. Plural of osmium. • OSMIUM n. a metallic element. |
| ALUMIUMS | • ALUMIUM n. (obsolete) aluminium, as first named by Sir Humphrey Davy, also ALUMINIUM, ALUMINUM. |
| CADMIUMS | • cadmiums n. Plural of cadmium. • CADMIUM n. a metallic element. |
| FERMIUMS | • FERMIUM n. a radioactive element. |
| HOLMIUMS | • holmiums n. Plural of holmium. • HOLMIUM n. a metallic element. |
| PREMIUMS | • premiums n. Plural of premium. • PREMIUM n. (Latin) a sum regularly payable for insurance. |
| STOMIUMS | • STOMIUM n. a pollen cell which splits open to scatter pollen. |
| CHROMIUMS | • chromiums n. Plural of chromium. • CHROMIUM n. a metallic element. |
| DIDYMIUMS | • DIDYMIUM n. a mixture of rare earth elements. |
| ENCOMIUMS | • encomiums n. Plural of encomium. • ENCOMIUM n. (Greek) an address of praise, also ENCOMION. |
| FREEMIUMS | • freemiums n. Plural of freemium. • FREEMIUM n. a business model in which a basic service is provided free of charge, with extra services available to paying subscribers. |
| PHORMIUMS | • phormiums n. Plural of phormium. • PHORMIUM n. a tall New Zealand evergreen plant of the agave family, with swordlike leaves. |
| GELSEMIUMS | • gelsemiums n. Plural of gelsemium. • GELSEMIUM n. a climbing plant. |
| NEODYMIUMS | • neodymiums n. Plural of neodymium. • NEODYMIUM n. a rare metallic chemical element of the lanthanide series. |
| PROOEMIUMS | • proœmiums n. Plural of proœmium. • PROOEMIUM n. a preface, also PROEM, PROOEMION. |
| IRIDOSMIUMS | • IRIDOSMIUM n. a very hard corrosion-resistant white or grey natural alloy of osmium and iridium used esp. in pen nibs, also IRIDOSMINE, OSMIRIDIUM. |
| EPITHALAMIUMS | • epithalamiums n. Plural of epithalamium. • EPITHALAMIUM n. a lyric ode in honor of a bride and bridegroom, also EPITHALAMION. |
| PRASEODYMIUMS | • praseodymiums n. Plural of praseodymium. • PRASEODYMIUM n. a chemical element, a metal with green salts, isolated from the once-supposed element didymium. |
| SUPERPREMIUMS | • superpremiums n. Plural of superpremium. • SUPERPREMIUM n. a very large premium. |
| FERROCHROMIUMS | • FERROCHROMIUM n. an alloy of iron with chromium, also FERROCHROME. |