The spelling of the word "masanao" can be explained using the International Phonetic Alphabet (IPA) transcription. This word is pronounced as /mɑːsənaʊ/, where the first syllable "ma-" is pronounced long and "sanao" is pronounced as "suh-now". The second syllable "-nao" sounds like "now" and the "s" in "sanao" is pronounced as "suh". Overall, when spelling "masanao", one should be careful to include the long "a" sound, the proper pronunciation of "sanao" and the correct placement of syllable emphasis.
"Masanao" is not a term that is commonly found in dictionaries or recognized as a mainstream word. As such, it does not have an established dictionary definition. It is possible that "masanao" could be a proper noun, a name, or a term specific to a certain context or language. Without any further information, it is difficult to provide a comprehensive definition.
If "masanao" is a name, it may derive from different cultural backgrounds, such as Japanese or Filipino, where names can often have specific meanings based on the characters used to write them. In this case, a dictionary definition may not accurately capture the intended meaning behind the name as it is usually subjective and personal to the individual.
To obtain a more precise definition of "masanao," it would be helpful to provide additional context or clarification.