solidified floating organic drop

https://doi.org/10.1351/goldbook.10219
Droplet of organic solvent recovered from the surface of the sample solution by solidification induced by cooling.
Source:
PAC, 2016, 88, 517. 'Glossary of terms used in extraction (IUPAC Recommendations 2016)' on page 535 (https://doi.org/10.1515/pac-2015-0903)