~1:[1,#B],4:[2,#B],9:[1,#B]@1Xelo@2Valet to Lwaxana Troi prior to Mr. Homn. Mrs. Troi said she terminated Xelo's employment because he was strongly attracted to her. (“Haven” [TNG]).
~1: [4, #b], 9: [1, #i], 19: [2, #b], 32: [1, #i]@1Xendi Sabu star system@2Solar system where the Enterprise -D rendezvoused with a Ferengi vessel in 2364 when DaiMon Bok offered Captain Picard the extraordinary gift of Picard's old vessel, the Stargazer. (“The Battle” [TNG]).
~1:[3,#B],7:[2,#BI],13:[1,#I]@1Xendi Starbase 9@2Starbase where the U.S.S. Stargazer was towed after the Enterprise -D received the old vessel from the Ferengi in 2364. (“The Battle” [TNG]).
~1:[1,#B],25:[3,#B],46:[1,#BI]@1xenopolycythemia@2Disease characterized by an abnormal proliferation of red blood cells causing varied symptoms including weakness, fatigue, enlarged spleen, and pain in the extremities. Dr. Leonard McCoy was diagnosed with terminal xenopolycythemia in 2268. He was cured, thanks to advanced medical information from the spaceship Yonada. Prior to that time, xenopolycythemia was considered to be incurable. (“For the World Is Hollow and I Have Touched the Sky” [TOS]).
~1:[2,#B]@1Xerxes VII@2Planet on which legend says a mythical land called Neinman may be found. (“When the Bough Breaks” [TNG]).
