Helonin is a relatively unknown word that pertains to a group of chemicals found in certain plants. The spelling of the word can be broken down into its phonetic components, with "he" sounding like "he" in "hello", "lo" sounding like "low" in "flow", and "nin" sounding like "neen" in "machine". Therefore, the IPA transcription of the word is /helənɪn/. While this word may not be commonly used, understanding its spelling can aid in reading and pronunciation of scientific texts related to plant chemistry.
An extractive of Helonias dioica, false unicorn root; employed in intestinal colic and as a vermifuge in doses of gr. 2-4 (0.13-0.25).
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.