There isn't a single word to describe an identical organism in the way you're asking. Here's why and some options depending on what you mean:

* Clones: This is the most common term for genetically identical organisms, created through artificial processes like nuclear transfer or splitting embryos.

* Identical Twins: These are naturally occurring organisms that share the same genetic material, arising from a single fertilized egg splitting.

* Monozygotic: This is the scientific term for identical twins, emphasizing their origin from a single fertilized egg (zygote).

Important Note: While these organisms are genetically identical, they might not be completely identical in every way due to environmental factors and random mutations that can occur after conception.