homophonous

-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.

也可拆解为

homo-

Same, identical.

-phonous

Of the sound, voice, or speech sound of the specified type.