poro-, por-, pori- +

Infection with pentastome parasites which involves the occurrence of adults in the lungs of reptiles: The disease porocephalosis can be caused by the infestation of the tongue worm of the family Porocephalidae.

Immature forms may be found in a variety of vertebrates, usually encysted in the mesenteries, liver, or other visceral organs.

Relating to pores: Some poroid mushrooms are those that form pores rather than gills.

A tumor of cells lining the opening of the sweat glands: At the dermatologist's, John was told that he had poroma, a benign, non-cancerous skin tumor that had developed from the terminal duct portion of a sweat gland.

The study of porous substances: Poromechanics is a branch of physics, specifically of continuum mechanics and acoustics, that studies the behavior of fluid-saturated porous media.

A porous medium or a porous material is a solid (often called matrix) permeated by an interconnected network of pores (voids or empty spaces) filled with a fluid (liquid or gas).

Referring to both porous and plastic matter: Poroplastic material is used to produce special felt for jackets or splints.

Cavity formation within a tissue: In his medical book about bones, Joe read that porosis could refer to a porous condition of bones or the development of a healing callus surrounding a broken bone,.

1. The condition of being porous: Porosity exists in things containing small voids (empty spaces) or cavities that can be permeated by water, air, gas, oil, and so on.
2. The ratio of the total amount of void, or empty, space in a material to the overall bulk volume of the material: Porosity can be exemplified by the ratio of the volume of space to the total volume of a rock

An incision (surgical procedure) made to enlarge a meatus (an opening or passage: A porotomy is often performed in the passage leading to the body surface), as of the urethra or ureter.

The urethra consists of transport tubes leading from the bladder to discharge urine outside the body.

The ureter is either of a pair of thick-walled tubes that carry urine from the kidney to the urinary bladder.

In males, the urethra travels through the penis, and carries semen as well as urine. In females, the urethra is shorter than in the male and emerges above the vaginal opening.

Full of pores; able to admit passage of a liquid: The old vase was certainly porous because when Jill filled it with water for the flowers, it leaked and was quite moist on the sides.

The porous passage of molecules dissolved in a fluid medium, implies the presence of pores or small openings in a structure.

Hardwood with larger than normal pores and vessels: Three examples of porous wood are ash, oak, and mahogany.

A tiny aperture in a structure; a pore: A porus is one of the pits on the body of an insect linked with the sense organs.

The outer opening of the external acoustic meatus (body opening): The porus acusticus externus allows sound waves to enter the ear.

The opening of the internal acoustic meatus (body opening) into the cranial cavity: The porus acusticus internus lets essential nerves and blood vessels pass from the brain into the inner ear.

The small taste pore opening in the taste buds of the tongue; taste pore: The porus gustatorius allows food chemicals to touch the sensory cell hairs to produce a sense of taste.

The opening of a sweat gland: The sweat pore, or porus sudoriferus, is the minute opening of a sweat gland duct on the surface of a person's skin.