From Islamic +‎ -ate (participial adjective-forming suffix).

• IPA^(key): /ɪsˈlɑːmɪkət/

• Audio (Southern England):

  (file)

Islamicate (comparative more Islamicate, superlative most Islamicate)

1. Associated with regions in which Muslims are culturally dominant, but not specifically with the religion of Islam.
2. Which has been influenced by Islam (religion).

• Islamication

• calamities