Trans-lucencies are objects or substances that allow light to pass through, but it is not entirely clear or transparent. Synonyms for trans-lucencies include translucency, semi-transparency, semi-opaqueness, opacity, semi-translucence, and semi-transparency. These terms describe the quality of an object or substance that allows some light to pass through while maintaining some level of visual obstruction. Trans-lucencies can occur in a wide range of materials, including plastics, glass, and fabrics. The degree of trans-lucency can vary depending on the thickness of the material and its composition, making it an important consideration in a variety of applications, including photography and design.