noun
thesaurus; dictionary of synonyms
A reference book that lists words grouped by meaning, providing synonyms and related expressions.
文章を書くときは、類語辞典を引くと表現の幅が広がる。
When writing, consulting a thesaurus broadens your range of expression.
A loanword from English, often used in computational or academic contexts, while 類語辞典 is the native Japanese term for a synonym dictionary.
Compound of 類語 (ruigo, 'synonym') and 辞典 (jiten, 'dictionary').