relative density

1. 1.

   the ratio of the density of something to the density of a standard

   Broaderdensity

   Narrowerspecific gravityvapor density

Questions about relative density

What does relative density mean?

relative density means "the ratio of the density of something to the density of a standard".

Is relative density a common word?

relative density is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.