Wiktionary
captioning
vb. (present participle of caption English)
Wikipedia
Usage examples of "captioning".
Charging misappropriation of the dog's name for commercial exploitation in captioning the mittens Genuine Simulated Spotskin, Wear 'Em With The Skinside Inside, the boy's lawyer, J Harret Ruth, cites the provision governing false description and false designation of origin in the Lanham Trade-Mark Act, claiming unspecified damages for trade-mark infringement and of the rights of publicity and privacy.
At the bottom of the display, like the captioning for the hearing-impaired, was a dialogue box being typed by intelligence specialists at the National Security Agency.