miˈcronymynonce-wd. [f.Gr. + µῑκρό-ς small + ὄνυµα name, ὄνοµα, after synonymy, etc.] The use of short words in scientific nomenclature. 1889Buck's Handbk.Med.Sci. VIII. 529/1 Astronomers have set an example in micronymy that anatomists might well follow.