Acephalous

Definitions:
1) Headless or lacking a clearly defined head.
2) Having no leader.

I was looking up ace in the dictionary, just because I was bored, and losing at solitaire.
I came across this word.
Does anybody use this anymore, outside of the scientific community?

Maybe I should start using it.

That woman was very acephalous: her body was great but her head left me lacking.

Can I speak to the manager, or is this an acephalous company?

I'm feeling very acephalousish today. I don't know where my head is.