The 'origin' of this custom/tradition is not known. = The 'origins' of this custom/tradition are not known. [=no one knows how this custom/tradition started]
He comes from 'humble origins'. [=he comes from a family that did not have high social status or much money]
The English word “rendezvous” is French 'in origin'. [=the English word comes from French]
(..) Dialogue: ..,Default,,,I'm going to swab\Nfor more evidence. Dialogue: ..,Default,,,Please don't do that. Dialogue: ..,Default,,,I may be able to trace\Nthe origin of the cocaine. Dialogue: ..,Default,,,I meant what I said. Dialogue: ..,Default,,,There could be particulates (..)2016 TvShow: Bones Title: The Death in the Defense Season: 11 Episode 11