Where does “逆ポーランド記法” come from?

逆ポーランド記法 (Japanese) comes from Japanese ポーランド記法, from Japanese ポーランド, from English Poland, from German Polen, from German -en, from Middle High German -en, from Old High German -īn, from Proto-Germanic -īnaz — adjectival suffix.

逆ポーランド記法 (Japanese): reverse Polish notation

Definitions

  1. reverse Polish notation

Ancestry of “逆ポーランド記法”, step by step

逆ポーランド記法 traces back through two separate lines of ancestry.

via Japanese ポーランド記法

StepLanguageWordMeaning
1Japaneseポーランド記法Polish notation
2JapaneseポーランドPoland
3EnglishPolandnamed after the home country of a plantation manager
4GermanPoleninflection of Pole: ## genitive/dative/accusative...
5German-enA suffix of verbs in their infinitive form; A...
6Middle High German-en
7Old High German-īn
8Proto-Germanic-īnaz-en
9Proto-Indo-European-iHnosCreates adjectives of materials
10Proto-Indo-European-no-adjectival suffix

via Japanese

StepLanguageWordMeaning
1Japanesereverse; contrary; opposite; converse
2Middle Chinese
Every word from Proto-Indo-European -no-
逆ポーランド記法 — Etymology, Origin & Word History | Etymology Explorer