phreno-

1.
a combining form meaning “mind,” “diaphragm,” used in the formation of compound words:
phrenology.
Also, especially before a vowel, phren-.
Origin
< Greek phreno-, combining form representing phrḗn mind, diaphragm
British Dictionary definitions for phreno-

phreno-

combining form
1.
mind or brain: phrenology
2.
of or relating to the diaphragm: phrenic
Word Origin
from Greek phrēn mind, diaphragm
Word Origin and History for phreno-

before vowels phren-, word-forming element meaning "mind," also "diaphragm," from Greek phreno-, comb. form of phrene properly "diaphragm, muscle which parts the abdomen from the thorax;" in Homer extended to "parts around the heart, breast," hence "heart" (as a seat of passions), "mind, seat of thoughts, wits, senses," of unknown origin.

phreno- in Medicine

phreno- or phren- or phreni-
pref.

  1. Mind: phrenoplegia.

  2. Diaphragm: phrenogastric.