What is the meaning of Io?

ISO 639-1 language code for Ido.

A type of moth, the io moth.

An exclamation of joy or triumph.

Alternative form of iou (I)

who

I

Alternative form of iou: I, me

I

always, every time, continuously

ever, at some point, sometime

always

to marry

io (exclamation of triumph)

something (indeterminate correlative of objects)

I

I (the first-person singular nominative pronoun)

Rōmaji transcription of いお

an exclamation of joy: hurray, hurrah, yay

an exclamation of pain: oh, ah, alas

an exclamation for getting attention: hey, oi, look, quick

I (the first-person singular nominative pronoun)

Obsolete form of iuo.

money, cowry

Source: wiktionary.org