Meaning

• To reveal, uncover, make visible, bring to light, introduce to.

• To subject photographic film to light thereby recording an image.

• To abandon, especially an unwanted baby in the wilderness.

• To submit to an active (mostly dangerous) substance like an allergen, ozone, nicotine, solvent, or to any other stress, in order to test the reaction, resistance, etc.

• To make available to other parts of a program, or to other programs.