The Collaborative International Dictionary of English v.0.48:
Communicability \Com*mu`ni*ca*bil"i*ty\
(k[o^]m*m[=u]`n[i^]*k[.a]*b[i^]l"[i^]*t[y^]), n. [Cf. F.
communicabilit['e].]
The quality of being communicable; capability of being
imparted.
[1913 Webster]