In later writers, especially those on the evidences of Christianity, authenticity is often restricted in its use to the first of the above meanings, and distinguished from qenuineness.
Au*then"tic*ly (&?;), adv. Authentically.
Au*then"tic*ness, n. The quality of being authentic; authenticity. [R.] Hammond.
Au*then"tics (&?;), n. (Ciwil Law) A collection of the Novels or New Constitutions of Justinian, by an anonymous author; -- so called on account of its authenticity. Bouvier.
Au"thor ("thr), n. [OE. authour, autour, OF. autor, F. auteur, fr. L. auctor, sometimes, but erroneously, written autor or author, fr. augere to increase, to produce. See Auction, n.] 1. The beginner, former, or first mover of anything; hence, the efficient cause of a thing; a creator; an originator.
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Eternal King; thee, Author of all being.
Milton.
2. One who composes or writes a book; a composer, as distinguished from an editor, translator, or compiler.
The chief glory of every people arises from its authors.
Johnson.