Breadcrumb Home > Dictionary > Index H Cite helleri: Meaning and Definition of Find definitions for: hel•ler•i Pronunciation: (hel'u-rī", -rē), [key] — n. a brightly colored, playful topminnow that is a hybrid of Xiphophorus helleri and X. maculatus, bred for aquariums. swordtail. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: helleri (Thesaurus) heller Helles TrendingHere are the facts and trivia that people are buzzing about. January 2021 Current Events: US News The Holocaust (1933–1945) Chinese New Year History, Meaning, and Celebrations Noble Titles and Ranks in a Monarchy The 5 Best Air Purifiers of 2020 Inaugural Trivia Related Content Daily Word Quiz: obviate Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language