अयदिayadi[a-yad-i] lc. when there is no 'yad' (gr.).
[a-yad-i] locative when there is no 'yad' (grammatical term).
कोशःDictionaries
Every entry for a word in Apte, Monier-Williams, Macdonell and the Dhātupāṭha, with their abbreviations spelled out, and an analysis of its forms.