The spelling of the word "ter indie" can be a bit confusing. Despite the presence of the letters "i" and "e," the correct pronunciation actually ends with the sound "ay." This is because the vowel sound in the second syllable is actually represented by the letter "a," not "e." The IPA phonetic transcription for "ter indie" is /tər ˈɪn.deɪ/. By using this transcription, we can better understand the correct pronunciation of the word.
Three times a day; abbreviation, t. i. d.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.