1. A crystal-clear water: The unusual limpidness of the slow moving river was greatly admired by those who were fortunate enough to see it.

The water in the pond had such a limpidness that no one was able to have any idea of its depth by looking down into it.

2. The high clarity and glassiness of objects: Mark was told that the best gems have a limpidness of blue to slightly greenish blue hues.

1. Descriptive of something which is perfectly clear and not cloudy nor turbid: The limpidness stream made it easy to see all kinds of creatures living in it.
2. A reference to expressing a style of writing something in a way that is easy to comprehend: The limpidness composition of the technician's report made it easy to be understood by just about anyone despite the complicated technical contents.