divaricate
verb
di·var·i·cate dī-ˈver-ə-ˌkāt 
də,
-ˈva-rə-
divaricated; divaricating
transitive verb
: to spread apart : branch off : diverge
Word History
Etymology
Latin divaricatus, past participle of divaricare, from dis- + varicare to straddle — more at prevaricate
First Known Use
1673, in the meaning defined above