0 relating to the mastoid process (= part of the skull just behind the ear): --
1 shaped like a breast or a nipple (= one of the two small darker parts that stick out from the breasts or chest) --
Since then a mastoid is a relatively minor complaint compared with 40 or 45 years ago.
There was a mastoid operation in 1920, which left him with facial paralysis and deafness.
One recollects operations for mastoid; a disfiguring operation very often, but today it is most unusual.
At one time, prolonged and painful surgery was necessary in treating mastoid infections.
All scalp electrodes were referenced to the left mastoid.
The reference electrode during recording was placed at the left mastoid.
All electrodes were referenced to the left mastoid.
All scalp electrodes were referenced to the left mastoid and off-line re-referenced to linked left and right mastoids.
