n.using several conjunctions in close succession, especially where some might be omitted (as in `he ran and jumped and laughed for joy')
英汉双解大词典
polysyndeton/ˌpɒlɪˈsɪndɪtən/
1.
N（名词）
the use of several conjunctions in close succession, esp where some might be omitted, as in he ran and jumped and laughed for joy 连词叠用 [rhetoric]