The story
Blend of snot (“mucus, especially nasal mucus”) + stalactite, possibly coined by James A. Pisarowicz in unpublished field notes of an exploration of the Villa Luz Cave in Tabasco, Mexico, in 1988.
First known use, by meaning
- from late 20th c. A colony of single-celled extremophilic bacteria that hangs in a sheet (having the consistency of snot or nasal mucus) from the ceilings of some caves like stalactites.
Etymology from Wiktionary, CC BY-SA 4.0.