Where does “Indoasia” come from?

Indoasia (English) comes from English India, from Old English Indea, from Latin India, from Ancient Greek Ἰνδία, from Ancient Greek Ἰνδός, from Old Persian 𐏃𐎡𐎯𐎢𐏁, from Sanskrit सिन्धु, from Proto-Indo-Aryan síndʰuṣ.

Ancestry of “Indoasia”, step by step

Indoasia traces back through two separate lines of ancestry.

via English India

StepLanguageWordMeaning
1EnglishIndiaA territory of the British Empire, chiefly comprising the modern day countries of India, Pakistan, Bangladesh and Burma
2Old EnglishIndeaIndia
3LatinIndia
4Ancient GreekἸνδία
5Ancient GreekἸνδόςan inhabitant of India or the Indian...
6Old Persian𐏃𐎡𐎯𐎢𐏁India; people living beyond the Indus
7Sanskritसिन्धुa river, stream; flood, waters; ocean, sea
8Proto-Indo-Aryansíndʰuṣriver, ocean; flow
9Proto-Indo-Iraniansíndʰušriver, stream
10Sanskritसिन्धु॑

via English Asia

StepLanguageWordMeaning
1EnglishAsiaA daughter of Oceanus and Tethys, the wife of the Titan Iapetus, and mother of Atlas, Prometheus, Epimetheus and Menoetius
2Middle EnglishAsia
3LatinĀsiaA kind of rye
4Ancient GreekἈσίαAsia Minor; Asia; Asia
5Mycenaean Greek𐀀𐀯𐀹𐀊an ethnonym for a Lydian; an epithet of the...
6Hittite𒀸𒋗𒉿northwest Anatolia
Every word from Sanskrit सिन्धु॑Every word from Proto-Indo-Iranian síndʰušEvery word from Proto-Indo-Aryan síndʰuṣ