7-Letter Words That Start With: OP

• not transmitting or reflecting light or radiant energy; impenetrable to sight

• hard or impossible to understand

• Neither reflecting nor emitting light.

• Allowing little light to pass through, not translucent or transparent.

• Unclear, unintelligible, hard to get or explain the meaning of

• Obtuse, stupid.

• Describes a type for which higher-level callers have no knowledge of data values or their representations; all operations are carried out by the type's defined abstract operators.

• make opaque

• become opaque

• the phenomenon of not permitting the passage of electromagnetic radiation

• incomprehensibility resulting from obscurity of meaning

• the quality of being opaque to a degree; the degree to which something reduces the passage of light

• Describing any rock having crystals of feldspar interspersed with plates of augite.

• most favorable conditions or greatest degree or amount possible under given circumstances

• most desirable possible under a restriction expressed or implied

• being in opposition or having an opponent

• A town dweller.

• (also Oppidan) A class of student in traditional English public schools such as Eton; opposed to colleger or King's Scholar.

• Of or pertaining to a town or conurbation.

• challenge the accuracy, probity, or propriety of