phrenic
Concise Oxford English Dictionary © 2008 Oxford University Press:
phrenic /ˈfrɛnɪk/
▶adjective Anatomy relating to the diaphragm.
– origin C18: from Fr. phrénique, from Gk phrēn, phren- ‘diaphragm, mind’ (because the mind was once thought to lie in the diaphragm).
'phrenic' also found in these Oxford entries:

