transparent-background image; image with transparency
Computing term for a digital image whose background is transparent, commonly used in graphic design and web development.
Using a transparent-background image for a website logo helps it blend into the background.
transmission image; X-ray image
Refers to an image produced by passing radiation through an object, such as an X-ray or other radiographic image.
The doctor explained the fracture condition while looking at the transmission image.
Compound of 透過 (transmission, penetration) and 画像 (image). The computing sense is a modern extension of the literal meaning.