TIL that "floss" is actually an acronym standing for "Frictional Ligation Of Subgingival Spaces"

https://en.wikipedia.org/wiki/Dental_floss
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1g1htxu/til_that_floss_is_actually_an_acronym_standing/