dimissory
Concise Oxford English Dictionary © 2008 Oxford University Press:
dimissory /ˈdɪmɪs(ə)ri/
▶adjective (in the Christian Church) denoting formal permission from a bishop for a person from one diocese to be ordained in another.
– origin ME (as pl. n.): from late L. dimissorius, from dimiss-, dimittere ‘send away’.
'dimissory' also found in these Oxford entries:

