deuterogamy
A second marriage, after the death of the first husband or wife; in distinction from bigamy, as defined in the old canon law.
uncountable
You here see that unfortunate divine, who has so long , and it would ill become me to say , successfully , fought against the deuterogamy of the age
Where it comes from
From deutero- + -gamy, from Ancient Greek. Literally, second wedding or marriage.
Adapted from the Wiktionary entry deuterogamy (CC BY-SA 4.0).