Isomorphous (Adjective)
Meaning
Having similar appearance but genetically different.
Classification
Relational adjectives (pertainyms).
Examples
- The isomorphous twins surprised everyone with their identical looks despite being genetically different.
 - Isomorphous flowers on the two different plant species fooled many botanists into thinking they were the same.
 - Although the two species of birds were isomorphous, their songs and habitats were vastly different.
 - Scientists were amazed to discover that the isomorphous species of frogs had distinct genetic makeup.
 - The isomorphous caterpillars of the two butterfly species were often mistaken for one another due to their similar appearance.