geminate
1 of 2adjective
gem·i·nate ˈje-mə-nət 
-ˌnāt
-ˌnāt 1
: arranged in pairs : duplicate
2
: being a sequence of identical speech sounds (as in meanness or Italian notte \\ˈnȯt-te\\ "night")
geminate
2 of 2verb
gem·i·nate ˈje-mə-ˌnāt
geminated; geminating
transitive verb
: to make geminate
intransitive verb
: to be or become geminate
gemination
ˌje-mə-ˈnā-shən
noun 
Word History
Etymology
Adjective
Latin geminatus, past participle of geminare to double, from geminus twin
First Known Use
Adjective
15th century, in the meaning defined at sense 1
Verb
circa 1637, in the meaning defined at transitive sense
Medical Definition
geminate
adjective
gem·i·nate ˈjem-ə-nət, -ˌnāt
: arranged in pairs