AskDefine | Define pore

Dictionary Definition



1 any tiny hole admitting passage of a liquid (fluid or gas)
2 any small opening in the skin or outer surface of an animal
3 a minute epidermal pore in a leaf or stem through which gases and water vapor can pass [syn: stoma, stomate] v : direct one's attention on something; "Please focus on your studies and not on your hobbies" [syn: concentrate, focus, center, centre, rivet]

User Contributed Dictionary


Etymology 1

From pouren from Old French, from porus from sc=polytonic (poros).




  1. a tiny opening in the skin
  2. by extension any small opening or interstice, especially one of many or allowing passage of a fluid.
a tiny opening in the skin
by extension any small opening
  • Hungarian: nyílás
  • Japanese: sc=Jpan

Etymology 2



  1. to study meticulously; to go over again and again.
  2. to meditate or reflect in a steady way.
to study meticulously
  • Japanese: sc=Jpan, sc=Jpan
to meditate or reflect in a steady way
  • Japanese: sc=Jpan, sc=Jpan


Extensive Definition

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 sebum
  • 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

See also

pore in German: Pore
pore in French: Pore
pore in Dutch: Porie
pore in Japanese: 毛穴
pore in Simple English: Pore
pore in Swedish: Por

Synonyms, Antonyms and Related Words

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