liaison /(lē̇`ā̇`zôN")/

li·ai·son

liaison

n.
  1. A union, or bond of union; an intimacy; an interrelationship.
  2. An illicit sexual relation between a man and a woman; a sexual afffair.
  3. A process of communication between parts of an organization or between two organizations acting together for a common purpose.
  4. A person whose function it is to maintain such communication.
  5. A pronunciation of a consonant sound that would be otherwise silent, such as the final consonant of certain French words, when the following word begins with a vowel sound. (Phonetics)