monotrope

noun2

1. •
   Any plant belonging to the Monotropoideae.
2. •
   A polymorph that does not have a reversible transformation into another form; A polymorphic crystal for which one form is more stable than any other form when cooled below the melting point.

   • Differential scanning calorimetry (DSC) or differential thermal analysis (DTA) scans (Section 5.5.3) can be employed to distinguish an enantiotrope from a monotrope. — 2011