Basilateral is not a common word, but its spelling can be explained through its phonetic transcription. According to IPA, basilateral is pronounced as /ˌbeɪsɪˈlætərəl/. The first syllable, "bas," is pronounced like "base," while the second syllable, "i," is pronounced like "eye." The next syllable, "lat," is pronounced like "latte," and the final syllable, "er-al," is pronounced like "air-uhl." Together, the word means "having a base on only one side." This word may be used in geometry or other technical fields.
Relating to the base and one or more sides of any part.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "basilateral" is not listed in major dictionaries, and there is no widely recognized etymology available for it. It is possible that "basilateral" is a specialized or technical term specific to a certain field or context. Without further information, it is difficult to provide more specific details about its origin or etymology.