This question on meta proposes using generic equivalents of vendor-specific names, which seems like a good plan. A specific subquestion is for Nikon-speak dx and fx. Ideas? So far I've seen the below.
DX (APS-C size sensor)
- cropped-sensor (smaller P&S sensors are also cropped)
FX (35mm-size sensor)
- full-frame (medium format sensors are bigger, so isn't "full" misleading?)
- 35mm-sensor (implies 35mm film?)
Critically, we must use terms that are intelligible to people who aren't familiar with the community, to enable effective searching.