het·ero·nym /ˈhɛtərəˌnɪm/
同拼法異音異義的字
Het·er·o·nym n. That which is heteronymous; a thing having a different name or designation from some other thing; -- opposed to homonym.
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heteronym
n : two words are heteronyms if they are spelled the same way
but differ in pronunciation (e.g. `bow')