Barrel distortion

a distortion produced by a lens in which the magnification decreases toward the edge of the field.
(photog) distortion of an image produced by an optical system that causes straight lines at image margins to bulge outwards

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    an engine having cylinders arranged around and parallel to a shaft, which they rotate by means of the contact of their piston rods with a swash plate or cam on the shaft.

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    any of the bathypelagic fishes of the family Opisthoproctidae, especially Macropinna microstoma, having telescoping eyes.

  • Barrelfish

    a blackish stromateid fish, Hyperoglyphe perciformis, inhabiting New England coastal waters.

  • Barrelhead

    either of the round, flat sections that form the top and bottom of a barrel. on the barrelhead, in advance or on demand: They won’t deliver the merchandise unless we pay cash on the barrelhead. Contemporary Examples After all, he provides “cash on the barrelhead” in exchange for a form of reality TV—college and professional […]

  • Barrelhouse

    a cheap saloon, especially one in New Orleans in the early part of the 20th century: so called from the racks of liquor barrels originally placed along the walls. a vigorous style of jazz originating in the barrelhouses of New Orleans in the early part of the 20th century. noun (US) a cheap and disreputable […]

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