The word "oleas" is spelled with two syllables: /o'lɛ.as/. The first syllable is pronounced with an open-o sound, similar to the "o" in "hot." The second syllable is pronounced with a short "e" sound, followed by an "a" pronounced as in "cat." The final "s" is pronounced as the voiceless "s" sound, similar to the "s" in "snake." This phonetic transcription of "oleas" provides a precise guide to pronouncing the word correctly.
Oleate.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.