略語大辞典 [Opt] 25 PVAL† poly-vinyl alcohol ポリビニル アルコール. 水溶性ポリマー.poly-vinyl alcohol; or PVA; a synthetic resin; a transparent organic material; dyes are sometimes embedded in thin films of PVAL for optical applications; [Opt:L:Chem]. 丸善「略語大辞典」JLogosID : 11856955