on request
When asked for, as in The agreement states that the rights on this book revert to the author on request. [c. 1800] Also see by request.
Words nearby on request
on pins and needles, on principle, on purpose, on record, on relief, on request, on sale, on schedule, on second thought, on sight, on someone's
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.