this answer shows that dimerization is a synthetic method On wikipedia, 1-octene is showed to made from numerous dimerizations or a tetramerization.
When I read that piperazine $\ce{C4H10N2}$ is made with ammoniation of chloroethanes or alkanolamines, I wonder if few repeating units synthesis is a general trend for making polyenes and heterocyclic saturated compounds. If dreaming is allowed, could dimerizing ethylamine $\ce{C2H7N}$ with eliminating hydrogen or aziridine $\ce{C2H5N}$ make piperazine?
For the title, I am hesitant to use telomerization or oligomerization because I am unsure about them in the contexts of this question.