略語大辞典 [Opt] 25 PVA† poly-vinyl alcohol ポリビニル アルコール. 水溶性ポリマー.poly-vinyl alcohol; or PVAL; a synthetic resin; a transparent organic material; dyes are sometimes embedded in thin films of PVA for optical applications; [Opt:L:Chem]. 丸善「略語大辞典」JLogosID : 11856953