a spiral galaxy whose center has the form of an extended bar.
barred spiral galaxy
A spiral galaxy with a barlike bulge in the center, extending between the core and the spiral arms. About a third of spiral galaxies have this straight bar of stars, gas, and dust extending out from the nucleus. As with other spiral galaxies, barred spiral galaxies rotate, and new stars form from the dust and gas in their arms. Astronomers believe that some elliptical galaxies containing hints of a bar and spiral might once have been barred spiral galaxies.
a cylindrical wooden container with slightly bulging sides made of staves hooped together, and with flat, parallel ends. the quantity that such a vessel of some standard size can hold: for most liquids, 31½ U.S. gallons (119 L); for petroleum, 42 U.S. gallons (159 L); for dry materials, 105 U.S. dry quarts (115 L). Abbreviation: […]
- Barrel ass
to charge headlong; move at high speed. verb phrase To barrel: We’re barrel-assing toward Van Nuys (1950s+ Hot rodders)
- Barrel chair
an easy chair having a high, semicircular back forming a single upholstered piece with the wings or arms; tub chair. Historical Examples Then father was coaxed to sit down in the barrel chair, and try its strength and its softness, and guess what it was made of. Little Fishers: and their Nets Pansy We made […]
- Barrel bolt
a rod-shaped bolt for fastening a door or the like, attached to one side of the door at the edge and sliding into a socket on the frame of the opening.
- Barrel cactus
any of several large, cylindrical, ribbed, spiny cacti of the genera Echinocactus and Ferocactus. Historical Examples He lives upon the barrel cactus, a plant so protected by spines as to seem unapproachable by man or animal. The Mystic Mid-Region Arthur J. Burdick Near by springs up the barrel cactus, a forbidding column no one dares […]