adjective Chemistry, Crystallography.
Examples from the Web for isomorphous
Its salts are isomorphous with those of alumina and sesquioxide of iron.
The seleniates are also very similar in properties to the sulphates, and both classes of salts are isomorphous.Cooley's Practical Receipts, Volume II|Arnold Cooley
It crystallizes in dark purple-red prisms, isomorphous with potassium perchlorate.
It crystallizes in the orthorhombic system and is isomorphous with stibnite (Sb2S3), which it closely resembles in appearance.
It is not isomorphous with the orthorhombic barium and strontium sulphates, as might be expected from the chemical formulae.