Geostigma 

A disease in Final Fantasy VII which is caused by Jenova's and Sephiroth's cells in the lifestream. They infect living humans whose bodies try to remove it, causing severe damage and eventually killing the host.

Your geostigma is gone... That's too bad

The last thoughts of Geostigma's death... those remnants will join the lifestream and girdle the planet; choking it; corroding it.

Geostigma by FFVIICC February 3, 2010

gestimate

to guess about a situation

The electric meters were not read every month. The electric company gestimates the electric usage at times

gestimate by Gerlinde Deaton October 4, 2007

geustimate 

its a cross between geuss and estimate, for all those times you really have no idea of the outcome of a situation. an estimated geuss :D

"i would geustimate that in this situation it will work!!

geustimate by ^<(jamie)>^ August 6, 2006