unribbed

unribbed

(ʌnˈrɪbd)
adj
1. not ribbed; lacking ridges or ribs
2. (Architecture) not ribbed
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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The 750ml bottles ribbed actuator likewise marks it as shampoo, versus unribbed actuators for conditioners.
Ultimate load-bearing capacity of unribbed cylindrical shells of steel silos.
(1987) reported an absolute roughness for 254 mm (10 in) diameter unribbed standard spiral ducts having a nominal joint spacing of 3.66 m (12 ft) equal to 0.06 mm (0.0002 ft).
(1987) reported an absolute roughness of 0.06 mm (0.0002 ft) for 254 mm (10 in) diameter unribbed standard spiral ducts having a nominal joint spacing of 3.66 m (12 ft); these data were not obtained in strict accordance with ASHRAE Standard 120.
Stem: unribbed = 0; ribbed = 1; tuberculated 2; ribbed-tuberculated 3; cylindrical/flattened = 4 8.
The simulated radiation interception per unit photosynthetic surface may be referred either to the "true" (i.e., ribbed) surface, or to the unribbed geometric projection of the stem.
shannoni) into the unribbed Clarkina altudaensis should not be regarded as a natural boundary because it does not reflect any evolutionary event in geological and biological development from the Guadalupian to Lopingian.