adj.not twisted; formerly twisted but now straight

AdS 5 × S5 untwisted
AdS_5 x S^5 Untwisted
Optimal angle of attack for untwisted blade wind turbine
The motion of untwisted untorted scroll waves in belousov-zhabotinsky reagent.
REINFORCED PLY MATERIAL WITH UNTWISTED SETS OF STEEL MONOFILAMENTS
The universal R-matrix for quantum untwisted affine Lie algebras
Kinds of Assumptions and Their Truth: Shaking an Untwisted F‐Twist
A cellular automaton model of excitable media IV. Untwisted scroll rings
Calogero-Moser and Toda systems for twisted and untwisted affine Lie algebras ☆
Circular knitting machine for producing knitted fabrics using untwisted fibrous material