Pore may refer to:

Biology

Animal biology and microbiology

* Sweat pore, an anatomical structure of the skin of humans (and other mammals) used for secretion of sweat * Hair follicle, an anatomical structure of the skin of humans (and other mammals) used for secretion of

sebum A sebaceous gland is a microscopic exocrine gland in the skin that opens into a hair follicle to secrete an oily or waxy matter, called sebum, which lubricates the hair and skin of mammals. In humans, sebaceous glands occur in the greatest nu ...

Canal pore The lateral line, also called the lateral line organ (LLO), is a system of Sensory perception, sensory organs found in fish, used to detect movement, vibration, and pressure gradients in the surrounding water. The sensory ability is achieved via m ...

, an anatomical structure that is part of the lateral line sense system of some aquatic organisms *

Gonopore A gonopore, sometimes called a gonadopore, is a genital pore in many invertebrates. Hexapods, including insects have a single common gonopore, except mayflies, which have a pair of gonopores. More specifically, in the unmodified female it is t ...

, a genital pore present in some invertebrates, particularly insects *

Ozopore An ozopore is the opening of a defensive gland present in some arthropods, notably in millipedes of the order PolydesmidaGram-negative bacterial secretion systems * One of the openings communicating with the skin surface at the terminus of

lactiferous duct Lactiferous ducts are ducts that converge and form a branched system connecting the nipple to the lobules of the mammary gland. When lactogenesis occurs, under the influence of hormones, the milk is moved to the nipple by the action of smooth mus ...

s in milk-producing mammals

Plant and fungal biology

Germ pore A germ pore is a small pore in the outer wall of a fungal spore through which the germ tube exits upon germination. It can be apical or eccentric in its location, and, on light microscopy, may be visualized as a lighter coloured area on the cell ...

, a small pore in the outer wall of a fungal spore through which the germ tube exits upon germination * 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 * An opening in a poricidal fruit capsule

Cell and molecular biology

Nuclear pore A nuclear pore is a part of a large complex of proteins, known as a nuclear pore complex that spans the nuclear envelope, which is the double membrane surrounding the eukaryotic cell nucleus. There are approximately 1,000 nuclear pore complexe ...

, 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 Aquaporins, also called water channels, are channel proteins from a larger family of major intrinsic proteins that form pores in the membrane of biological cells, mainly facilitating transport of water between cells. The cell membranes of a ...

Physical sciences

Pore (material) Porosity or void fraction is a measure of the void (i.e. "empty") spaces in a material, and is a fraction of the volume of voids over the total volume, between 0 and 1, or as a percentage between 0% and 100%. Strictly speaking, some tests measure ...

, 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 Clinker nodules produced by sintering Sintering or frittage is the process of compacting and forming a solid mass of material by pressure or heat without melting it to the point of liquefaction. Sintering happens as part of a manufacturing ...

to form solids from powders, including ceramics *

Pore (bread) Pores are the air pockets found in Leavening agent, leavened bread, where carbon dioxide from the Fermentation (food), fermentation process creates a network of primarily interconnected void structures. The degree to which pores form are a major d ...

, an air pocket in bread *

Pore space in soil The pore space of soil contains the liquid and gas phases of soil, i.e., everything but the solid phase that contains mainly minerals of varying sizes as well as organic compounds. In order to understand porosity better a series of equations have ...

Void (composites) A void is a pore that remains unfilled with polymer and fibers in a composite material. Voids are typically the result of poor manufacturing of the material and are generally deemed undesirable. Voids can affect the mechanical properties and lif ...

, a pore that remains unoccupied in a composite material *

Solar pore Sunspots are phenomena on the Sun's photosphere that appear as temporary spots that are darker than the surrounding areas. They are regions of reduced surface temperature caused by concentrations of magnetic flux that inhibit convection. Sun ...

, a newly forming sunspot without a penumbra

Other uses

Pore, Casanare Pore is a town and municipality in the Department of Casanare, Colombia. Pore, which played a vital role during the independence movement, was the 18th town to be declared a '' Pueblo Patrimonio de Colombia'' (Heritage Town of Colombia) on Ma ...

, a town and municipality in the Department of Casanare, Colombia *

Ryan Pore Ryan Pore (born September 23, 1983 in Mansfield, Ohio) is an American former professional soccer player and the current head men's soccer coach of he Kansas City Roos men's soccer team at the University of Missouri–Kansas City. Career Youth a ...

(born 1983), American soccer player *

Daniel Alolga Akata Pore Daniel Alolga Akata Pore is a Ghanaian politician and former soldier. He was a member of the Provisional National Defence Council which ruled Ghana following the military coup d'état on 31 December 1981. He was arrested along with others includi ...

, Ghanaian politician * ''

P.O.R.E. The Revolutionary Workers' Party ( es, Partido Obrero Revolucionario, ca, Partit Obrer Revolucionari; POR) is a Spanish far-left group. It was founded in 1974 as the radical Anti-Francoist Revolutionary Workers' Party of Spain (''Partido Obrero ...