dekad

词形变化

dekads 复数

释义与例句

n.
  1. 1.

    Ten days, especially of rainfall. Generally identified as dekad 1: 1ˢᵗ-10ᵗʰ, dekad 2: 11ᵗʰ-20ᵗʰ, and dekad 3: 21ˢᵗ-last day of each month.

    气象

词源

Borrowed from Ancient Greek δεκάς (dekás, “group of ten”). By surface analysis, deka- + -ad. Doublet of decad and decade.

来源：wiktionary