Nakhi pakhta, nakhest, ki punbadonaro pushondaast; hujayrai darozruyai epidermisi pust (daroziash 20—50 millimetr), ki asosan az sellyuloza iborat ast. Dar yak poyai rastani 4— 15 khazor nakh inkishof meyobad. Shakli Nakhi pakhta tasmai jilodori pechoni safed yo dar baze navho zardtob, sabztob va qahvarang ast. Narkhi pakhta 1/3 hissai massai …

Nakhi sintezi yak nav nakhhoi khimiyaviro guyand, ki az polimerhoi sintezi istehsol karda meshavand. Nigared niz Nakhhoi khimiyavy.