noun
originator; promoter; initiator
Refers to a person who originates or promotes an idea, plan, or movement. Somewhat formal and not an everyday word; more common in written or business contexts.
その企画の発頭人は彼だ。
He is the originator of that project.
新しい運動の
He is known as the promoter of the new movement.
Compound of 発 (starting, originating) and 頭人 (leader, head person). The exact historical derivation is uncertain, but the term is conventionally associated with the meaning of a person who initiates or promotes something.