recto
Concise Oxford English Dictionary © 2008 Oxford University Press:
recto/ˈrektəʊ/
▶noun (pl. rectos) a right-hand page of an open book, or the front of a loose document. Contrasted with verso.
– origin C19: from L. recto (folio) ‘on the right (leaf)’.
'recto' also found in these Oxford entries:

