Open to two or more interpretations; or of uncertain nature or significance; or (often) intended to mislead. Synonyms: ambiguous; equivocal. Context examples:
The translucent nature of polyethylene prohibits a the greater amount of light than the transparent polypropylene. Light can be particularly harmful to collectibles, especially magazines, comics, books, photographs, artwork or any kind of cover or jacket that has color and/or photos or illustrations.
Hard plastics like polystyrene and poly(methyl methacrylate), are used below their glass transition temperatures; that is in their glassy state. Their Tg's are well above room temperature, both at around 100 o C. Rubber elastomers like polyisoprene and polyisobutylene, are used above their Tg's, that is, in the rubbery state, where they are soft and flexible.