Pachylasma giganteum; 5 b, rostrum of an extremely young specimen, much enlarged, showing its compounded nature, viz.
The egg of the common bladder-wrack (Fucus vesiculosus), a simple naked cell, much enlarged.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "much enlarged" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.