Open to two or more interpretations; or of uncertain nature or significance; or (often) intended to mislead. Synonyms: ambiguous; equivocal. Context examples:
Many of the polypropylene sleeves are less than 2 mil. Many of the sleeves being sold on the internet and by hobby and comic shops are very flimsy and range from .5 mil to 2 mil. The majority of commercially-available polypropylene sleeves are 1 to 1.5 mil. Our polyethylene sleeves are 2 mil and 3 mil, respectively. In more chemistry-speak, propylene (CH3CH:CH2) is is a sub-stratum of ethylene. Ethylene is the purest form of the base chemical and thus the purer better of the two.
Polycarbonate vs Acrylic. Plastic is a polymer that has a large molecular mass. The monomers of plastic can be natural or synthetic. Plastic is synthesized from petrochemicals. There are two types of plastics, thermoplastics and thermosetting polymers. Thermoplastics becomes soft when heated and when cooled it solidifies again.