Grand trine - or maybe not...

I can't seem to find a solid definition of a grand trine anywhere. According to astro.com, I have one, but I read somewhere that they use too wide margins, so maybe I don't anyway. In every description I have ever read, they say that it usually(!) consists of one of the elements, but I have yet to find a site that has explained what happens when that's not the case. Would anyone please explain this to me or give me a link or two so that I can find out for myself?

Thank you elle! This is awsome!

Hmm, interesting! I actually do see cancer moon traits in me, but not so much as having a "regular" cancer moon, I would imagine. Fits pretty well.

"some sites may not recognise that because of gemini being air and not water....taking away the like element factor."

Actually, most sites seem to recognise the phenomena, saying that all three planets are USUALLY in one of the elements, but as far as I've come, no site has written anything about what happens in such a case. But I keep looking.

If anyone else have an interest in grand trines in more than one element, this is the only info I have been able to gather so far:

"The weakening of a Grand Trine happens when one of the planets or points is in a different element than the other two."

http://www.holmastrology.com/apps/blog/show/42941787-the-grand-trine-in-astrology

So not much, but it's something and I'll keep looking.