| AMMONIUM | • ammonium n. (Inorganic chemistry) The univalent NH4+ cation, derived by the protonation of ammonia. • ammonium n. (Organic chemistry, especially in combination) Any similar cation formed by replacing one or more hydrogen… • AMMONIUM n. the ion NH4+, which occurs in the salts formed by ammonia and in ammonia solutions. |
| CORONIUM | • coronium n. (Historical) A supposed chemical element, hypothesized in the 19th century in order to explain a green… • CORONIUM n. the name given to a hypothetical element in the sun's corona showing spectral lines now known to be due to iron and nickel that have lost large numbers of electrons. |
| LIMONIUM | • Limonium prop.n. A taxonomic genus within the family Plumbaginaceae – statice, sea lavender and related species. • LIMONIUM n. a sea plant with brightly coloured funnel-shaped flowers. |
| MECONIUM | • meconium n. (Medicine) A dark green mass, the contents of the fetal intestines during the later stages of mammalian… • meconium n. (Obsolete) Opium. • MECONIUM n. the first fecal excretion of a newborn child. |
| MUONIUMS | • muoniums n. Plural of muonium. • MUONIUM n. an electron and a positive muon bound together. |
| NIHONIUM | • nihonium n. The synthetic transactinide chemical element with atomic number 113. • NIHONIUM n. a highly radioactive element, of which only a few atoms have ever been produced. |
| OOGONIUM | • oogonium n. (Biology) An immature ovarian egg within a developing fetus. • oogonium n. (Botany, mycology) A sac (the female gametangium) containing oospheres in algae or fungi. • oögonium n. Alternative spelling of oogonium. |
| OPSONIUM | • OPSONIUM n. anything eaten with bread as a relish. |
| OXONIUMS | • oxoniums n. Plural of oxonium. • OXONIUM n. a certain grouping of oxygen and hydrogen atoms. |
| PEPONIUM | • peponium n. (Botany) Any of the plants of the genus Peponium. • Peponium prop.n. A taxonomic genus within the family Cucurbitaceae – certain flowering plants. • PEPONIUM n. a fruit having a fleshy interior and a hard rind, also PEPO, PEPONIDA. |
| POLONIUM | • polonium n. A rare, highly radioactive chemical element (symbol Po) with atomic number 84. • POLONIUM n. a rare highly radioactive metallic chemical element, present in some uranium ores. |
| SYCONIUM | • syconium n. (Botany) A collective fleshy fruit, in which the ovaries are hidden within a hollow receptacle, as in… • SYCONIUM n. (Greek) a form of fruit with ovaries on an enlarged receptacle. |