कुत्kuta Sautra सौत्र root (i.e. one found in grammatical Su1tras सूत्र s only), to spread.
a Sautra सौत्र root (id est one found in grammatical Su1tras सूत्र s only), to spread.
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.