Never heard this word used before

I was talking to a new business co-worker today and as we were parting he said something to me, I understood it all...but there was a word he used I've never heard before. What exactly does ''atomodori'' mean? I kind guess from the context it's a formal way of saying ''I'' it's just that I have never heard it before.

Cale,

Don't you use a dictionary? "後戻り" (atomodori) means "turning back" or "backtracking", but without knowing the conversation you had, it's impossible to say whether this was indeed what you heard.

Ok, if you want to know exactly what he said it was...後戻りはもう出来ない...and unfortunatly, I couldn't find it in my dictionary. Which I assume is rather odd?

Cale,

後戻りはもう出来ない

That's a fairly common phrase meaning "There's no going back now".

If your dictionary is no good, use Eijiro...
http://eow.alc.co.jp/

I thought it meant something like I can't return anymore...guess I took it a little too literal eh? Oh well, I was close enough. Thanks