modernyoudaoicibaDictYouDict[modern 词源字典]
modern: [16] Latin modus (source of English mode and model) meant ‘measure’. Its ablative form modō hence originally denoted ‘to the measure’, but it subsequently came to be used as an adverb meaning ‘just now’. And in postclassical times an adjective modernus was derived from it, signifying ‘of the present time’ – source, via French, of English modern. At first it was used strictly for ‘of the present moment’, but before the end of the 16th century the now familiar sense ‘of the present age’ had begun to emerge.
=> mode, model[modern etymology, modern origin, 英语词源]
modern (adj.)youdaoicibaDictYouDict
c. 1500, "now existing;" 1580s, "of or pertaining to present or recent times;" from Middle French moderne (15c.) and directly from Late Latin modernus "modern" (Priscian, Cassiodorus), from Latin modo "just now, in a (certain) manner," from modo (adv.) "to the measure," ablative of modus "manner, measure" (see mode (n.1)). Extended form modern-day attested from 1909.

In Shakespeare, often with a sense of "every-day, ordinary, commonplace." Slang abbreviation mod first attested 1960. Modern art is from 1807 (by contrast to ancient); modern dance first attested 1912; first record of modern jazz is from 1954. Modern conveniences first recorded 1926.
neo-youdaoicibaDictYouDict
word-forming element meaning "new, recent," used in a seemingly endless number of adjectives and nouns, mostly coined since c. 1880, from Greek neo-, comb. form of neos "new, young, youthful; fresh, strange; lately, just now," from PIE root *newo- (see new).
PhiladelphiayoudaoicibaDictYouDict
city in Pennsylvania, U.S., from Greek, taken by William Penn to mean "brotherly love," from philos "loving" (see -phile) + adelphos "brother" (see Adelphia). Also the name recalls that of the ancient city in Lydia, mentioned in the New Testament, which was so called in honor of Attalos II Philadelphos, 2c B.C.E. king of Pergamon, who founded it. His title is said to have meant "loving the brethren." Philadelphia lawyer "clever, shrewd attorney" attested from 1788 in London, said originally to have been applied to Andrew Hamilton, who obtained the famous acquittal of J.P. Zenger on libel charges in 1735.
[C]ricket and coaching were after all popular in their day in places besides Philadelphia. It was merely that Philadelphia kept on with them longer than most places. This is a perennial Philadelphia trick, and gives to Philadelphia a sort of perpetual feeling of loss. Philadelphians are always just now getting rid of things that are picturesque, like those gas lamps on the streets, only because everybody else got rid of them long ago. [Nathaniel Burt, "The Perennial Philadelphians," 1963]