Pore

Pore may refer to:

In animal biology and microbiology:
* Sweat pore, an anatomical structure of the skin of humans (and other mammals) used for secretion of sweat
* Canal pore, an anatomical structure that is part of the lateral line sense system of some aquatic organisms
* An opening across both inner and outer bacterial membranes, a part of many Gram-negative bacterial secretion systems
* One of the openings communicating with the skin surface at the terminus of lactiferous ducts in milk-producing mammals

In plant biology
* Stoma, a small opening on a plant leaf used for gas exchange
* An anatomical feature of the anther in some plant species, the opening through which pollen is released
* A characteristic surface feature of porate pollen

In cell & molecular biology:
* Nuclear pore, a large protein complex that penetrates the nuclear envelope in eukaryotic cells
* Ion channel pore; The ion-selective opening in the membrane of a eukaryotic cell formed by members of the ion channel family of proteins
* A water-selective opening (water channel) in the membrane of a eukaryotic cell formed by assemblies of the protein aquaporin

In the physical sciences:
* One of many small openings in a solid substance of any kind that contribute to the substance's porosity (typical usage in earth sciences, materials science and construction)
* A small defect in the crystal structure that may arise during sintering to form solids from powders, including ceramics

ee also

* Aperture