[li.ai.son] n [F, fr. MF, fr. lier, fr. OF] (1759) 1: a binding or thickening agent used in cooking
2. a: a close bond or connection: interrelationship b: an illicit sexual relationship: affair 3a 3 a: communication for establishing and maintaining mutual understanding and cooperation (as between parts of an armed force) b: one that establishes and maintains liaison
4: the pronunciation of an otherwise absent consonant sound at the end of the first of two consecutive words the second of which begins with a vowel sound and follows without pause