You searched for: “translucent
opaque, translucent, transparent
opaque (oh PAYK) (adjective)
1. Difficult to understand: Manfred's oral instructions were opaque and Dennis had to ask for an explanation.
2. Regarding something which does not allow light to pass through: The windows were painted black so they would be opaque, thus permitting the photographer to work in his photo-processing laboratory without unwanted illumination.
translucent (trans LOO suhnt, tranz LOO suhnt) (adjective)
Pertaining to something which is not completely clear or transparent, but clear enough to allow light to pass through: The frosted glass in the door was translucent.
transparent (trans PAIR uhnt, trans PAHR uhnt) (adjective)
1. Concerning light being able to pass through: The new window in the sunroom was transparent and let in all the sunshine.
2. Characteristic of something self-evident; obvious; apparent: Trina's facial expression was so transparent that Susan always knew what she was thinking.

The information from the lecture was completely opaque to Ryan and so he couldn't understand a thing.

After Howard read the text book, his mind felt more translucent, as if some light on the subject was getting through and the information was beginning to make sense, but not completely.

Then, after Marla asked for an explanation, the answer suddenly became transparent.

translucent (adjective), more translucent, most translucent
Letting bright elements pass through but diffusing them so that objects on the other side cannot be clearly distinguished: The door of the shower was made of translucent glass, letting shining images transmit through it, but not allowing clearly visible forms to be seen of who might be taking a shower!

Frosted glass is an example of another translucent product.

(Latin: not transparent nor translucent, not clear, unable to shine through; shaded, shady; dark; no luster; not clearly understood or expressed)