D defs.my
Entry 2 senses Webster, 1913

Polysynthesis

/pŏlēsĭn'thəsĭs/ · Pol·y·syn·the·sis · IPA /ˌpɒliˈsɪnθəsɪs/
01 n. The act or process of combining many separate elements into a whole.
  1. 1.
    The act or process of combining many separate elements into a whole.
  2. 2.
    The formation of a word by the combination of several simple words, as in the aboriginal languages of America; agglutination.(Philol.)