The Collaborative International Dictionary
Polysynthetic \Pol`y*syn*thet"ic\ (p[o^]l`[i^]*s[i^]n*th[e^]t"[i^]k), a. [Poly- + synthetic.] Characterized by polysynthesis; agglutinative.
Polysynthetic twinning (Min.), repeated twinning, like that of the triclinic feldspar, producing fine parallel bands in alternately reversed positions.
Wiktionary
a. 1 (context grammar English) said of a language, characterized by a prevalence of relatively long words containing a large number of morphemes. Typically, the morphemes are '''bound''' (i.e., they cannot stand alone as independent words). An example of a polysynthetic language is Ojibwe, where: 2 (context mineralogy English) Having layers of twin crystals
WordNet
adj. forming derivative or compound words by putting together constituents each of which expresses a single definite meaning [syn: agglutinative]
Usage examples of "polysynthetic".
High Martian is polysynthetic and very stylized, with an expression for every nuance of their complex system of rewards and punishments, obligations and debts.
It is not polysynthetic, at any rate, not more so than French, and its words undergo no such alteration by agglutination as in Aztec and Algonkin.
Very different from all these is the spirit of a polysynthetic language.
The transmission of thought by figures and symbols would, on the whole, therefore, foster those narrow and material tendencies which the genius of polysynthetic languages would seem calculated to produce.