This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. A conversion to a different purpose or from one system to another, as in equipment or production techniques.

n. A conversion or transition from one thing to another

n. an event that results in a transformation.

v. change from one system to another or to a new plan or policy

v. make a shift in or exchange of

n. an event that results in a transformation

"As drug costs continue to rise, the changeover is accelerating."

changeovers   

transmutation    transformation    shift   

glycogenesis    isomerization    isomerisation    rectification   

conversion    transition   

fighting    disconnector    eufaula    rightwing    loadbalancing    on-off    single-lane    roadwork    bloodletting    sequencer