pentagonous
构词拆解
- -ous
- Used to form adjectives from nouns, to denote: · (chemistry) Used in chemical nomenclature to name chemical compounds in which a specified chemical element has a lower oxidation number than in the equivalent compound whose name ends in the suffix -ic. For example sulphuric acid (H2SO4) has more oxygen atoms per molecule than sulphurous acid (H2SO3). See Inorganic nomenclature.
词源说明
释义
形容词adjective
- 1Obsolete form of pentagonal.