viscidity

When the thrombus is comparatively free from red blood-corpuscles, the softened product, in consequence of its yellowish color, opacity, and viscidity, resembles pus.

According to De Candolle, this may depend upon the greater or less amount of water they contain, upon the greater or less viscidity of their fluids, or the rapidity with which these fluids circulate.

What then is the meaning of viscosity or viscidity?

P. and s. quite glabrous, with yellow viscidity, shining when dry; flesh yellowish white. illibatus, Fr.

It is by some supposed that high colors and viscidity are indications of non-edible species, but there are numerous exceptions here.