opacities
Areas blocking light
Opacities is the plural of opacity, which refers to the quality of being opaque—not allowing light to pass through.
In medical imaging, particularly X-rays and CT scans, opacities are areas that appear lighter or whiter than surrounding tissue, indicating something denser or more solid: The chest X-ray revealed several opacities in the lower lung.
Figuratively, opacity can describe obscurity or lack of transparency in communication, policy, or intent.
Atmospheric opacity from vapor
- hazinessState of being unclear
- milkinessCloudy white quality
- murkinessDimness, lack of clarity
- fogginessObscured or unclear state
filminess · blurriness · frosted · smoky · tinted · matte · translucency · dimness
State of being unknown
- vaguenessAbsence of precision
- ambiguityOpenness to multiple interpretations
- incomprehensibilityBeing impossible to grasp
- impenetrabilityResistance to penetration
unintelligibility · abstruseness · confusion · unclearness · indistinctness · muddiness · nebulousness · inscrutability
Steep falls or eye opacity
- calcificationsHardened mineral accumulations
- lesionsAreas of damaged tissue
- nodulesSmall rounded protuberances
- infiltratesEnters covertly, often undetected
consolidations · imaging · X-ray · CT scan · diagnostic · pathological
Practice of hiding information
- hiddennessState of being obscured
- veilingConcealing with covering
- maskingConcealing by covering
- screeningEvaluative selection process
obscuring · shrouding · cloaking · nontransparency · impenetrability · inscrutability
Mass-to-volume ratio
- thicknessDepth of material
- impermeabilityResistance to passage
- coverageExtent of inclusion
- coatingApplied surface covering
cloudiness
Atmospheric opacity from vapor
fogginess · filminess · blurriness · frosted · smoky · tinted · matte · translucency · dimness · obscuration
obscurity
State of being unknown
- vaguenessAbsence of precision
- ambiguityOpenness to multiple interpretations
- incomprehensibilityBeing impossible to grasp
impenetrability · unintelligibility · abstruseness · confusion · unclearness · indistinctness · muddiness · nebulousness · inscrutability · mystification
cataracts
Steep falls or eye opacity
- calcificationsHardened mineral accumulations
- lesionsAreas of damaged tissue
- nodulesSmall rounded protuberances
infiltrates · consolidations · imaging · X-ray · CT scan · diagnostic · pathological
secrecy
Practice of hiding information
- hiddennessState of being obscured
- veilingConcealing with covering
- maskingConcealing by covering
screening · obscuring · shrouding · cloaking · nontransparency · impenetrability · inscrutability
density
Mass-to-volume ratio
- thicknessDepth of material
- impermeabilityResistance to passage
- coverageExtent of inclusion
opacitiestransparencies
Clear sheets for projection
clarities · translucencies · intelligibilities · glassiness · sheerness