lex·i·col·o·gy /ˌlɛksəˈkɑləʤi/
辭典學
lexicology
詞彙學
Lex·i·col·o·gy n. The science of the derivation and signification of words; that branch of learning which treats of the signification and application of words.
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lexicology
n : the branch of linguistics that studies the lexical component
of language