Welcome! One I'll throw in there is NOID. I am almost embarrassed to admit that while lurking here before I began posting, it took me about a week to figure out what NOID was. I sure felt like an idiot when I learned it was as simple as it looks: No ID for those orchids without known names.
Nutgirl
I can refer you to this site for Orchid Genera and Abbreviations -
Just click on the link - Intergeneric Orchid Hybrid Abbreviations
If there is anything specific you would like to know just ask We'd be happy to help you