Where does “इनमें” come from?

इनमें (Hindi) comes from Hindi में, from Sanskrit मध्य॑, from Proto-Indo-Aryan mádʰyas, from Proto-Indo-Iranian mádʰyas, from Proto-Indo-European médʰyos, from Proto-Indo-European medʰi-, from Proto-Indo-European me — in the middle of, near, by, around, with.

Ancestry of “इनमें”, step by step

इनमें traces back through two separate lines of ancestry.

via Hindi में

StepLanguageWordMeaning
1Hindiमेंin, inside of; within; into
2Sanskritमध्य॑—
3Proto-Indo-Aryanmádʰyas—
4Proto-Indo-Iranianmádʰyasmiddle
5Proto-Indo-Europeanmédʰyosmiddle
6Proto-Indo-Europeanmedʰi-with, among; with, along
7Proto-Indo-Europeanmein the middle of, near, by, around, with

via Hindi इन

StepLanguageWordMeaning
1Hindiइनthese - oblique case only, see below for direct;...
Every word from Proto-Indo-European me →Every word from Proto-Indo-European medʰi- →Every word from Proto-Indo-European médʰyos →