1. Containing, involving, or having the nature of a promise.
2. Indicating how the provisions of an insurance contract will be carried out after it has been signed.

[Medieval Latin prōmissōrius, from Latin prōmissor, one who promises, from prōmissus, past participle of prōmittere, to promise. See promise.]

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.