Webster 1913 Edition
Having the quality of rising or floating in a fluid; tending to rise or float;“Buoyant on the flood.”
as, iron is.
Bearing up, as a fluid; sustaining another body by being specifically heavier.
The water under me was
Light-hearted; vivacious; cheerful;–
Webster 1828 Edition
1.Bearing up, as a fluid; sustaining another body. [Unusual.]