hen·di·a·dys
noun/henˈdaɪədɪs/
/henˈdaɪədɪs/
[uncountable] (grammar)- the use of two words joined with ‘and’ to express a single idea, for example ‘nice and warm’
二词一义，重言法（用 and 连接两个词表达一个意思，如 nice and warm） Word Originlate 16th cent.: via medieval Latin from Greek hen dia duoin ‘one thing by two’.