The word "LSIBUS" is an unusual term which can be somewhat difficult to spell. The correct spelling is "ellipsis," a term used to indicate omitted words in a sentence. The pronunciation of the word is /ɪˈlɪpsɪs/, with the stress on the second syllable. The "L" sound at the beginning of the misspelled term may have been added erroneously as a pronunciation guide, or it may have been a mistake in writing. Nonetheless, it is important to remember that "ellipsis" is the correct spelling of the word.