plasticus

From Ancient Greek πλαστικός (plastikós, “shapable, mouldable”).
By surface analysis, plast(ēs) (“shaper”, “moulder”) +‎ -icus (adjective-forming suffix).

• (Classical Latin) IPA^(key): [ˈpɫas.tɪ.kʊs]
• (modern Italianate Ecclesiastical) IPA^(key): [ˈplas.t̪i.kus]

plasticus (feminine plastica, neuter plasticum); first/second-declension adjective

1. Of or pertaining to moulding or shaping.
2. (New Latin) Made of plastic.
   • 2018, Tuomo Pekkanen, De eiectamentis plasticis [1], Nuntii Latini 30.3.2018:

     In regione maritima inter Californiam et Insulas Havaianas patente tanta eiectamentorum plasticorum copia fluctuat, ut magnitudine aream Francogalliae ter excedat.

     In the waters between California and Hawaii, such an amount of plastic waste bobs around that it exceeds thrice the area of France.

First/second-declension adjective.

• plastēs

• “plasticus”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• "plasticus", in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
• plasticus in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.