|Xial||Na'nam - province||completely landlocked; contains Mt. Seleya; contains Subministry of Agriculture||geography|
|Xir'tan||continent||an island continent somewhat larger than Australia; is the most tectonically unstable land mass with frequent earthquakes and volcanoes; is too unstable to serve as a permanent home for more than a handful of Vulcans||geography|
|Xir-tan||continent||most techtonically stable continent||geography|
|xirahnah||silver birds||the legendary Vulcan "silver birds"; they have chromium-coloured feathers; falcon-sized; make a "chir-up"-like sound or an eerie cry; nest furtner north in the L-langon range; usually come over the Sas-a-shar at dawn (Orion Press Lexicon)||animal|
|xoi'ksem||cloud||cloud/mass of liquid particles suspended in a gaseous medium||meteorology|
|Xon||Xon||he was to have been Enterprise's new science officer in ST II, the aborted 1977 TV series||individual|
|Xtmprsqzntwlfb||Spock's family name||this was made up by DC Fontana to satisfy the question she was always asked||individual|
7 terms found.