In dictionaries:
polysynthetic twinning
(geology) A type of contact twinning, typically observed in plagioclase, in which the composition surfaces are parallel to one another
Polysynthetic language
In linguistic typology, polysynthetic languages, formerly holophrastic languages,Mario Pei, Frank Gaynor, Dictionary of Linguistics, 1954, p. 92 are highly synthetic languages, i.e., languages in which words are composed of many morphemes (word parts that have independent meaning but may or may not be able to stand alone).
polysynthetic twin
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