susceptibility

plural susceptibilities

1. uncountableThe condition of being susceptible; vulnerability.

   It has been reported that periparturient cows undergo a period of immunosuppression of various immunological parameters associated with a high susceptibility to uterine and mammary infections […]

   2015 August 29, “Different Blood Cell-Derived Transcriptome Signatures in Cows Exposed to Vaccination Pre- or Postpartum”, in PLOS ONE, →DOI

2. countableA way in which one is susceptible.

   1 more example

   It seems that the spiritual fermentation of the cabbalists, who in the sixteenth century established a center in Northern Palestine (Safed) and aroused the dormant susceptibilities of the Orient, penetrated also into Yemen and had the effect of a messianic message to the languishing souls longing for redemption.

   1929, Abraham Zevi Idelsohn, Jewish Music: Its Historical Development, page 365

3. countableuncountableemotional sensitivity.

   The eyes were large and black, and had the moonlight's melancholy, with that tearful lustre which is the certain sign of keen susceptibility.

   1837, L[etitia] E[lizabeth] L[andon], “Anticipation”, in Ethel Churchill: Or, The Two Brides. […], volume I, London: Henry Colburn, […], →OCLC, page 40

4. countableuncountablebiologyBeing vulnerable to a treatment (usually an antibiotic or antifungal); also, the degree of such vulnerability (i.e., weak, moderate, or strong).

   Synonyms: sensitivity

5. countableuncountablenatural scienceselectric susceptibility, a measure of how easily a dielectric polarizes in response to an external electric field (compare permittivity).