Congressional
来自Big Physics
late Middle English (denoting an encounter during battle): from Latin congressus, from congredi ‘meet’, from con- ‘together’ + gradi ‘walk’.
wiktionary
congression + -al
etymonline
congressional (adj.)
"of or pertaining to a congress," 1690s, from Latin congressionem (from congressus, see congress) + -al (1); specifically "of or pertaining to the Congress of the American states" from 1776. As such the word was at first reviled as barbarous, but Pickering (1816) quotes an unnamed English correspondent: "The term Congress belonging to America, the Americans may employ its derivatives, without waiting for the assent of the English."
