Polysynthetic /(pŏl`ĭ*sĭn*thĕt"ĭk)/

Pol·y·syn·thet·ic

Polysynthetic

a.
  1. Characterized by polysynthesis; agglutinative.

Phrases & Compounds
Polysynthetic twinning
repeated twinning, like that of the triclinic feldspar, producing fine parallel bands in alternately reversed positions.