Where does “入次数” come from?

入次数 (Japanese) comes from Japanese 入, from Japanese 入る, from Old Japanese いる.

入次数 (Japanese): indegree

Definitions

  1. indegree

Ancestry of “入次数”, step by step

入次数 traces back through two separate lines of ancestry.

via Japanese 入

StepLanguageWordMeaning
1Japanese入to enter
2Japanese入るto enter, go into, get into; to arrive; to join a...
3Old Japaneseいる—

via Japanese 次数

StepLanguageWordMeaning
1Japanese次数degree (of the power of a number, or a variable)
Every word from Old Japanese いる →Every word from Japanese 入る →Every word from Japanese 入 →