विरचन

पुं० [सं० वि√रच् (बनाना)+ल्युट-अन] [वि० विरचनीय, भू० कृ० विरचनीय] १. रचना करना। निर्माण करना। बनाना। २. तैयारी

The formation of the state of Madhya Pradesh took place on November 1.50.Rock formations take millions of years.

preparations for the ceremony had begun