supernatant adjective & noun. [su:pǝ'neɪt(ǝ)nt, sju:-] M17.
[Latin supernatant- pres. ppl stem of supernatare, formed as SUPER- + natare (see NATANT).]
A. adjective.
1. Of a fluid: lying above a solid residue which has been separated out by precipitation, centrifugation, etc., or (occas.) floating on the surface of a denser fluid. M17.

2. Of a part of a ship etc.: above the surface of the water. L17.
b. noun. A supernatant fluid. E20.

[TahlilGaran] English Dictionary ▲