The Collaborative International Dictionary of English v.0.48:

Vascularity \Vas`cu*lar"i*ty\ (v[a^]s`k[-u]*l[a^]r"[i^]*t[y^]),
   n.; pl. Vascularities (v[a^]s`k[-u]*l[a^]r"[i^]*t[i^]z).
   (Biol.)
   The quality or state of being vascular.
   [1913 Webster]