mamm/o , mast/o
breast
mastoid/o
mastoid process
maxill/o
maxilla (upper jaw bone)
meat/o
opening, meatus
medi/o
middle
mediastin/o
mediastinum
medull/o
medulla
megal/o
enlargement
melan/o
black
men/o
menses, menstruation
mening/o , meningi/o
meninges (membranes covering the brain and spinal cord)
mentr/o
monthly discharge of blood
ment/o
mind
metacarp/o
metacarpus (hand bones)
metatars/o
metatarsus (foot bones)
metr/o , metri/o
uterus (womb)
micr/o
small
morph/o
form, shape, structure
muc/o
mucus
muscul/o , my/o , myos/o , myx/o
muscle
mut/a
genetic change
myc/o
fungus
mydr/o
widen, enlarge
myel/o
bone marrow, spinal cord