Definition of "scaleless"

scaleless

/ˈskeɪl.ləs/

adjective
not comparable
1. Lacking anything to give a sense of scale; not having a reference for size.
2. Of a surface: free from deposits of scale.
3. (botany, zoology) Not having scales.
  Quotations
  There are also some surprises such as Eurotamandua, a scaleless pangolin that looks astonishingly like a South American anteater.
  2018, Tim Flannery, Europe: A Natural History, page 65
4. Without using a set of scales.