Entry 1 sense Webster, 1913

Polysynthetic

/(pŏl`ĭ*sĭn*thĕt"ĭk)/ · Pol·y·syn·thet·ic · IPA /ˌpɒlisɪnˈθɛtɪk/

01 a. Characterized by polysynthesis; agglutinative.

Phrases & compounds

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