A word introduced by Hutchinson, in his book, *The Spirit of Masonry*, to designate a Freemason in reference to the *akakia* (innocence) with which he was to be distinguished, derived from the Greek word *akakia* (see the preceding article on the Acacia).
The Acacians constituted a heretical sect in the primitive Christian Church, who derived their name from Acacius, Bishop of Caesarea from 340 to 365. The doctrine of these Acacians was that Christ is not of the same substance as God, but merely resembles Him. There was subsequently another sect of the same name under Acacius, who was Patriarch of Constantinople from 471 and died in the year 489.
However, it is needless to say that the Hutchinsonian application of the word Acacian to signify a Freemason has nothing to do with the theological reference of the term.