1814, "fact of being wrecked," from wreck (v.) + -age. Meaning "remains of a wrecked thing" is from 1832.

"that which is appended to something as a proper part," 1640s; see append + -age.

"deficiency, the amount by which anything is short," 1862, American English, from short + -age.

early 15c., "benefice of a vicar," from vicar + -age. Meaning "house or residence of a vicar" is from 1520s.

also pre-scientific, "existing before the scientific age," by 1836, from pre- "before" + scientific.

1850, "act of slipping," from slip (v.) + -age. In mechanics, "amount of slippage" (by 1905).

1767, "loss or damage done by breaking;" 1813, "action of breaking;" from break (v.) + -age.

c. 1300, "act of carrying in a cart," also "price paid for carting," from cart + -age.

"a proportion or rate per hundred," 1789, from percent + -age. Commercial sense of "profit, advantage" is from 1862.

also *ayu-, Proto-Indo-European root meaning "vital force, life; long life, eternity."

It forms all or part of: age; aught (n.1) "something; anything;" aye (adv.) "always, ever;" Ayurvedic; coetaneous; coeval; each; eon; eternal; eternity; ever; every; ewigkeit; hygiene; longevity; medieval; nay; never; no; primeval; sempiternal; tarnation; utopia. 

It is the hypothetical source of/evidence for its existence is provided by: Sanskrit ayu- "life;" Avestan aiiu "age, life(time);" Greek aiōn "age, vital force; a period of existence, a lifetime, a generation; a long space of time," in plural, "eternity;" Latin aevum "space of time, eternity;" Gothic aiws "age, eternity," Old Norse ævi "lifetime," German ewig "everlasting," Old English a "ever, always."