contagious
1. [ adjective ] easily diffused or spread as from one person to another
Examples:

"a contagious grin"

Related terms: infectious
2. [ adjective ] of or relating to communicable diseases
Examples:

"by the road to the contagious hospital"

Related terms: contagious_disease
3. [ adjective ] (of disease) capable of being transmitted by infection
Synonyms: transmissible communicable contractable transmittable catching
Related terms: infectious
Similar spelling:   contagiously
  contagion
  contiguous
  contestation
  contusion
  commodious
  contuse
  contiguity
  contestant
  contacting