ribless

adj.having no ribs or no visible ribs

Ribless ribbon parachute
Ribless ram air parachute
The ribless lierne vault at the gates of quart in Valencia
Design and behavior of ribless solar reflectors
Wind pressure distribution around a ribless hyperbolic cooling tower
THE RIBLESS LIERNE VAULT AT THE GATES OF QUART IN VALENCIA ; LA BÓVEDA DE CRUCERÍA ANERVADA DEL PORTAL DE QUART DE VALENCIA
CALCULATION OF CARRYING CAPACITY OF UNIVERSAL RIBLESS GRANARY OF ZEMAN TECHNOLOGY, AUSTRIA
Certification by birdstrike analysis on C27J fullscale ribless composite leading edge
A FULL-SCALE AND WIND-TUNNEL STUDY OF WIND PRESSURE DISTRIBUTION AROUND A RIBLESS HYPERBOLIC COOLING TOWER
Drink bottle goes panel-less, ribless: a California marketer launches a new line of 'fruity-licious' beverages aimed to cure hangove...