The word "mesotriaene" is quite complex in terms of its spelling. Its phonetic transcription is /mɛsoʊtraɪaɪn/ which can help explain how the word is pronounced. The first part "meso-" means middle, while "triaene" refers to a type of organic compound with three double bonds. This word is not frequently used and may only be familiar to those with a background in chemistry. Remembering its spelling may be challenging, but its phonetic transcription can help with pronunciation.