Pronunciation Suffix
  1. Used to form adjectives from nouns, to denote possession or presence of a quality in any degree, commonly in abundance.
    bulb + -ous → bulbous
    courage + -ous → courageous
    joy + -ous → joyous
    poison + -ous → poisonous
    riot + -ous → riotous
  2. (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.
Synonyms Related terms Translations Translations
  • Russian: -истый
  • Spanish: -oso

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