1. 
[syn: receptiveness, receptivity, openness]
The Collaborative International Dictionary of English v.0.48:
Receptivity \Rec`ep*tiv"i*ty\ (r[e^]s`[e^]p*t[i^]v"[i^]*t[y^] or
   r[=e]`s[e^]p*t[i^]v"[i^]*t[y^]), n. [Cf. F.
   r['e]ceptivit['e].]
   1. The state or quality of being receptive.
      [1913 Webster]
   2. (Kantian Philos.) The power or capacity of receiving
      impressions, as those of the external senses.
      [1913 Webster]
WordNet (r) 3.0 (2006):
receptivity
    n 1: willingness or readiness to receive (especially impressions
         or ideas); "he was testing the government's receptiveness
         to reform"; "this receptiveness is the key feature in
         oestral behavior, enabling natural mating to occur"; "their
         receptivity to the proposal" [syn: receptiveness,
         receptivity, openness]