intercommunicate
verb
in·ter·com·mu·ni·cate ˌin-tər-kə-ˈmyü-nə-ˌkāt 
intercommunicated; intercommunicating; intercommunicates
intransitive verb
1
: to exchange communication with one another
2
: to afford passage from one to another
intercommunication
ˌin-tər-kə-ˌmyü-nə-ˈkā-shən
noun 
Synonyms
- brainstorm
- communicate
See all Synonyms & Antonyms 
Example Sentences
the two agencies will need to intercommunicate better if the nation is ever to become truly secure from international terrorism
Word History
First Known Use
1586, in the meaning defined at sense 1
intercommunication
noun
as in commerce
Synonyms & Similar Words
Relevance
- commerce
- communication
- intercourse
- communion
- contact
- touch
- hold