This word is not acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. someone skilled at coping with, or managing transition in some, or any field

adj. something, such as a country, undergoing transition from one system or status to another

"There were many who agreed with this “transitionist” view, but there was an opinion split across the board in the country which prevented realism from prevailing."