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单词 halogenous
释义

halogen /halˈə-jən/

noun

Any of the elements in the seventh group of the periodic table, these being fluorine, chlorine, bromine, iodine and astatine (the first four defined in the 19c as forming salts by direct union with metals; astatine discovered in 1940)

ORIGIN: Gr hals salt, and -gen (1)

halogenate /-ojˈ/ transitive verb

To combine with a halogen

halogˈenous adjective

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更新时间:2024/11/11 13:27:57