meato-, meat-, mea-

(Latin: opening or passageway in the body, bodily opening or canal; to go, to pass, passage)

impermeable (adjective), more impermeable, most impermeable
Conveying a surface that does not allow a passage through it; especially; liquids; waterproof.
irremeable (adjective), more irremeable, most irremeable
Descriptive of something that is impossible to go through: Because of a terrorist attack, the country declared an irremeable border so no one could enter or leave.
meatal (adjective)
Relating to a body opening or passage way: The doctor was examining the meatal tube in Jim's ears in an effort to determine what was causing his loss of hearing.
meatomastoidectomy
Incision of the mastoid process to enlarge the passage in the nipple-shaped process of the mastoid portion of the temporal bone that extends downward and forward behind the external auditory meatus (opening).

The auditory, or acoustic, meatus consists of two passages in the ear; the external acoustic meatus leads from the auricle to the tympanic membrane (eardrum) and the internal acoustic meatus which is for the passage of nerves and blood vessels.

meatome
meatometer
meatoplasty
meatorrhapy
meatoscope
A speculum (mirror, or looking-glass) for examining a natural passage; such as, the urethra.
meatoscopy
A visual examination of a meatus (opening or passage); especially, the urinary meatus or a ureteral orifice (tube that conveys urine from the bladder to the outside).
meatotome
meatotomy
meatus (s) (noun), meatuses or meatus (pl)
A tubular opening or a canal through a part of the body: This element usually involves the external auditory meatus or the tube in the outer ear that goes to the eardrum.
permeability
The property of something that can be pervaded by a liquid; as by osmosis or diffusion.
permeable

A cross reference of other word family units that are related directly, indirectly, or partially with: "opening, hole, cavity, tract, tube": alveolo-; antro-; anu-; celo-; coelio-; concho-; fenestra-; hernio-; hiat-; ora-; parieto-; poro-; pyl-, pyle-; pylor-; sphinctero-; splanchn-; stomato-; syringo-; uretero-; urethro-; vagino-; ventricul-.