acidic paper
Technical term for paper that is acidic, often used in discussions of paper degradation and preservation.
Acidic paper tends to deteriorate over time.
Libraries carry out deacidification treatments on acidic paper.
Acidity; the property of being acidic, used in chemistry and material science.
Compound of 酸性 (さんせい, 'acidity') and 紙 (し, 'paper').