sub·​dea·​con | \ˌsəb-ˈdē-kən \

Definition of subdeacon 

: a cleric ranking below a deacon: such as

a : a cleric in the lowest of the former major orders of the Roman Catholic Church

b : an Eastern Orthodox or Armenian cleric in minor orders

c : a clergyman performing the liturgical duties of a subdeacon

First Known Use of subdeacon

before the 12th century, in the meaning defined above

History and Etymology for subdeacon

Middle English subdecon, from Anglo-French subdiakene, from Late Latin subdiaconus, from Latin sub- + Late Latin diaconus deacon — more at deacon

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The first known use of subdeacon was before the 12th century

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