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Origin and history of linkage

linkage(n.)

"system of combined links," 1874, originally in mechanical engineering, from link (v.) + -age.

To understand the principle of Peaucellier's link-work, it is convenient to consider previously certain properties of a linkage, (to coin a new and useful word of general application), consisting of an arrangement of six links, obtained in the following manner ... (etc.). ["Recent Discoveries in Mechanical Conservation of Motion," in "Van Nostrand's Eclectic Engineering Magazine," vol. xi, July-December 1874]

Entries linking to linkage

"to bind, fasten, couple, unite as if by links," late 14c., believed to be from link (n.1), though it is attested earlier. Intransitive sense "become connected, join in marriage" is from 1530s. Related: Linked; linking.

word-forming element in nouns of act, process, function, condition, from Old French and French -age, from Late Latin -aticum "belonging to, related to," originally neuter adjectival suffix, from PIE *-at- (source of Latin -atus, past participle suffix of verbs of the first conjugation) + *-(i)ko-, secondary suffix forming adjectives (see -ic).

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    Trends of linkage

    adapted from books.google.com/ngrams/ with a 7-year moving average; ngrams are probably unreliable.

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