The word "coombsite" is not recognized in any reputable dictionary, and thus may be a misspelling or a newly coined term. However, based on the given spelling and using IPA phonetic transcription, it can be pronounced as /kuːm.baɪt/. The phonetic transcription breaks the word down into individual sounds, starting with the /k/ sound, followed by the long /uː/ vowel sound and ending with the /t/ sound. Despite the absence of a clear definition, the word "coombsite" can be spelled and pronounced using these phonetic guidelines.