communicable meaning
ENFR communicable 
- AdjectiveCOMmore communicableSUPmost communicablePREcom-SUF-able
- (of a disease) Able to be transmitted between people or species; contagious or catching.
- talkative or expansive.
- readily communicated.
- (of a disease) Able to be transmitted between people or species; contagious or catching.
Definition of communicable in English Dictionary
- Part-of-Speech Hierarchy
- Adjectives
- Adjectives
Source: Wiktionary
Grammatically, this word "communicable" is an adjective.