immersābĭlis (inm-), e, adj. [inmerso],
that cannot be sunk , i. e. unconquerable : (Ulixes) adversis rerum immersabilis undis, Hor. Ep. 1, 2, 22.
immersābilis (inm-) e, adj.2 in+merso, not to be sunk, unconquerable : adversis undis, H. ...
An Elementary Latin Dictionary