As far as I know, the only Okrandian {tejpu’} are:

Hovtej                  astronomer
mI' tej                  mathematician
quntej                  historian
yuQtej                  geographer
'otlhtej                 someone who studies quantum mechanics.

 

… while there are many more official {QeDmey}:

HolQeD                linguistics
Hov leng QeD     “Treknology”
HovQeD               astronomy

HuchQeD            economics
nughQeD            sociology
porghQeD           the scientific study of bodily functions
DI'ruj QeD           metaphysics
HapQeD              physics
no'QeD                genealogy
rayQeD                genetics
roSqa'QeD          archaeology
tamlerQeD          chemistry
yuQQeD              geography

'otlhQeD             quantum mechanics,  quantum theory