Pore may refer to:

Biology

Animal biology and microbiology

Sweat pore Perspiration, also known as sweating, is the production of fluids secreted by the sweat glands in the skin of mammals. Two types of sweat glands can be found in humans: eccrine glands and apocrine glands. The eccrine sweat glands are distrib ...

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

Hair follicle The hair follicle is an organ found in mammalian skin. It resides in the dermal layer of the skin and is made up of 20 different cell types, each with distinct functions. The hair follicle regulates hair growth via a complex interaction between h ...

, an anatomical structure of the skin of humans (and other mammals) used for secretion of sebum * Canal pore, an anatomical structure that is part of the lateral line sense system of some aquatic organisms * Gonopore, a genital pore present in some invertebrates, particularly insects * Ozopore, the external discharge site of defensive glands in millipedes and some arachnids * 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

Plant and fungal biology

* Germ pore, a small pore in the outer wall of a fungal spore through which the germ tube exits upon germination *

Stoma In botany, a stoma (from Greek ''στόμα'', "mouth", plural "stomata"), also called a stomate (plural "stomates"), is a pore found in the epidermis of leaves, stems, and other organs, that controls the rate of gas exchange. The pore is bor ...

, a small opening on a plant leaf used for gas exchange * An anatomical feature of the

anther The stamen (plural ''stamina'' or ''stamens'') is the pollen-producing reproductive organ of a flower. Collectively the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called the filam ...

in some plant species, the opening through which pollen is released * A characteristic surface feature of

porate pollen Pollen is a powdery substance produced by seed plants. It consists of pollen grains (highly reduced microgametophytes), which produce male gametes (sperm cells). Pollen grains have a hard coat made of sporopollenin that protects the gametop ...

* An opening in a poricidal fruit capsule

Cell and molecular biology

* Nuclear pore, a large protein complex that penetrates the nuclear envelope in eukaryotic cells *

Ion channel pore Ion channels are pore-forming membrane proteins that allow ions to pass through the channel pore. Their functions include establishing a resting membrane potential, shaping action potentials and other electrical signals by gating the flow of io ...

, 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

Physical sciences

* Pore (material), 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 * Pore (bread), an air pocket in bread * Pore space in soil * Void (composites), a pore that remains unoccupied in a composite material * Solar pore, a newly forming sunspot without a penumbra

Other uses