"of or pertaining to coffee," 1842, from Modern Latin caffea (see coffee) + -ic.
Entries linking to caffeic
coffee n.
"drink made from the ground and roasted seeds of a tree originally native to Arabia and Abyssinia," c. 1600, from Dutch koffie, from Turkish kahveh, from Arabic qahwah "coffee," which Arab etymologists connected with a word meaning "wine," but it is perhaps rather from the Kaffa region of Ethiopia, a home of the plant (coffee in Kaffa is called būno, which itself was borrowed into Arabic as bunn "raw coffee").
The early forms of the word in English indicate a derivation from Arabic or Turkish: chaoua (1598), cahve, kahui, etc. French café, German Kaffe are via Italian caffè.
The first coffee-house in Mecca dates to the 1510s; the beverage was in Turkey by the 1530s. It appeared in Europe c. 1515-1519 and was introduced to England by 1650. By 1675 the country had more than 3,000 coffee houses and coffee had replaced beer as a breakfast drink, but its use there declined 18c. with the introduction of cheaper tea. In the American colonies, however, the tax on tea kept coffee popular.
Meaning "a light meal at which coffee is served" is from 1774. As a shade or color resembling coffee, 1815. Coffee-bean is from 1680s. Coffee-mill is from 1690s; coffee-spoon is from 1703; coffee-pot is from 1705; coffee-cup is from 1762. Coffee-shop is from 1838. Coffee-cake is from 1850 as "cake in which coffee is an ingredient." Coffee break attested from 1952, at first often in glossy magazine advertisements by the Pan-American Coffee Bureau.
Did you drink a cup of coffee on company time this morning? Chances are that you did—for the midmorning coffee break is rapidly becoming a standard fixture in American offices and factories. [The Kiplinger Magazine, March 1952]
-ic
Middle English -ik, -ick, word-forming element making adjectives, "having to do with, having the nature of, being, made of, caused by, similar to," from French -ique and directly from Latin -icus or from cognate Greek -ikos "in the manner of; pertaining to." From PIE adjective suffix *-(i)ko, which also yielded Slavic -isku, adjectival suffix indicating origin, the source of the -sky (Russian -skii) in many surnames. In chemistry, indicating a higher valence than names in -ous (first in benzoic, 1791).
In Middle English and after often spelled -ick, -ike, -ique. Variant forms in -ick (critick, ethick) were common in early Modern English and survived in English dictionaries into early 19c. This spelling was supported by Johnson but opposed by Webster, who prevailed.