Wiktionary
n. The formalities that accompany a mass burial
Usage examples of "mass funeral".
Since the cave-in, they had not been able to get back into the diggings to work their claims and they had just come from the mass funeral of the six men that had been crushed to death by the treacherous yellow gravel.
There must be better ways, Jason Bradley kept telling himself, of celebrating one's twenty-first birthday than attending a mass funeral.
Booth and Haley were at sea when the mass funeral took place and it was not for a few days that they were able to go to the little churchyard in which one corner will be forever naval, the corner where the naval casualties of two wars slept the sleep of eternal peace.
Dare followed it with the mass funeral for the crew who fell in the Orion massacre.
Tragedy usually has a fair element of farce about it, and this was seen next day when the mass funeral of our dead took place at the Russian Cemetery, outside Pekin.
We formed the audience for a mass funeral at which two young and frightened priests muttered words over a hundred blotched and swollen corpses, tolled their little bells, sprinkled holy water, and signaled to the sextons to start the bonfire.
Disarm your misguided colleague, and spare the CDT the expense of a mass funeral, no less costly for lack of any identifiable remains!