homomorphs

homomorphs

[′hä·mə‚mȯrfs]
(chemistry)
Chemical molecules that are similar in size and shape, but not necessarily having any other characteristics in common.
References in periodicals archive ?
Of course, 25 years and 10 novels further down the line I feel slightly different about this; now I think the two forms are simply different - novels aim to be complete worlds - attempted homomorphs either of this world (whatever that may be), or some other.
It, too, is considered genetically tetraploid on the basis of its NF = 28 and chromosomes occurring as groups of four homomorphs.