1. (of disease) capable of being transmitted by infection
   - catching, communicable, contagious, contractable, transmissible

See also: infectious

• unbalanced
• Sir William Turner Walton
• Sir William Wallace
• Sir William Walton
• Sir Winston Leonard Spenser Churchill
• Sir Yehudi Menuhin
• Sirach
• Siracusa
• Siraj-ud-daula
• SIRC
• sirdar
• sire
• siree
• siren
• siren call
• siren song
• Sirenia
• sirenian
• sirenian mammal
• Sirenidae
• siriasis
• siris
• siris tree
• Sirius
• sirloin