The quality or state of being glairy; the degree to which something resembles glair or egg white.
From glairy plus the standard noun-forming suffix -ness. This abstract noun allows technical and historical writers to discuss the viscosity and appearance of substances in a systematic way.
In medieval craft guilds, the 'glairiness' of your egg white was actually quality-controlled—apprentices were tested on whether they could prepare glair of the correct consistency.
Complete word intelligence in one call. Free tier — 50 lookups/day.