Definitions

1. verb

to make (someone or something) more sensitive to a particular feeling or situation

“The exposure to loud music helped to sensitize her to the importance of ear protection.”

2. noun

a substance that increases the sensitivity of a photographic plate or film

“The photographer used a special sensitizer to make the photo more vibrant.”

3. verb (transitive)

to make (a substance, especially a photographic plate or film) sensitive to light

“The solution was used to sensitize the film for the developing process.”