aˈvidity

/ əˈvɪdɪtɪ /

noun

1. the quality or state of being avid
2. 1. eagerness
   2. greed; avarice
3. chem
   1. the strength of an acid or base in proportion to its degree of dissociation
   2. another term for affinity
4. immunol a measure of antigen-to-antibody binding, based on the rate of formation of the complex