معنی کلمه The ear fluid

Nearly all children will, at some point, experience a build-up of fluid behind the ear drum.

Fluid can build up in your middle ear , usually after a middle ear infection .

What is the common causes for developing fluid in the ear for both adults and children ?

The fluid is almost black in color and the ear drum in thinned out and appears bulging .

This instrument enables the doctor to look in the ear and judge whether there is fluid behind the eardrum .