sub voce
/ˌsʌb ˈvəʊtʃi/ /ˌsʌb ˈvəʊtʃeɪ/adverb
As a direction in a text: under the word or heading given (abbreviated s.v.
Origin
Late 17th century; earliest use found in White Kennett (1660–1728), historian and bishop of Peterborough. From post-classical Latin sub voce from classical Latin sub + vōce, ablative of vox.