Definition: the deliberate termination of a human pregnancy, most often performed during the first 28 weeks of pregnancy. [Oxford]
The other video has been gone viral at times. To explain an etymological origin of this signed word, the latter part of the ASL compound simply is "removal" or "to remove".
This ASL verb/noun glossed as "REMOVE/REMOVAL" was scrutinized (and otherwise interpreted) by non-signing hearing English speakers where their own English word abortion (a verb derived from "to abort") was not talked about.
Related signs: REMOVE/REMOVED.