I carry it in my car along with a spare Bible and a pocket concordance. It has happened to me that God send divine appointments and it is necessary to have these resources available to share the Gospel anywhere.
I love the size and the quality of this dictionary. Color illustrations and a fairly decent letter size meets the needs for a portable dictionary.
Needless to say, it is very concise but just enough to solve the most basic questions. I also carry a magnifier with these resources, just in case.