More about plastique
Plastique, “a ballet technique for mastering slow movement,” is the French cognate of plastic. Both terms come by way of Latin plasticus “moldable” from Ancient Greek plastikós, formed from plastós “formed, molded.” Plastós is based on the verb plássein (stem plath-) “to form, mold” and -tos, an adjective-forming suffix, with the change from the expected “plathtós” to the actual plastós perhaps for easier pronunciation. Other derivatives of plássein include plasma, plaster, rhinoplasty, and the recent Words of the Day plasticity and esemplastic. While plastic in English dates to circa 1630, plastique was first recorded in English circa 1800.