Anencephaly 

One of the worst fetal issues where the brain and the top part of the skull is missing. This oddity is caused because of the lack of folic acid between the second and whole third month of embryo development.
This means that the neural tube aka. the spinal cord and the backbone does not close properly.
Anencephales or anencephalics look like frogs with protuberant eyes, and have got often an encephalocele at the occipital (missing) area, facial traits like zombies... Yuck!

This is not my case...

Dr.: - Miss your baby suffers Anencephaly...
Mum: -Oh shit...

Courage to all mothers who experienced that their babies suffered this disease!!

Anencephaly by Teh Wolfboy August 19, 2015

anencephalic 

Medical term that literally means "brainless". Often used to confuse complete idiots who think they're smart.

"Quit acting like such a fool you pompous narcissistic anencephalic moron!"

anencephalic by Fallie the Pally May 4, 2010

Anencephalous

1. (Biology) partially or totally lacking a brain (encephalon).

2. A dumb, dull-witted or obtuse person or being.

Al believes that life on the sun's suface is possible at night time. He's an anencephalous son of a gun.

Anencephalous by Thesaurus Rex May 8, 2016