Terran

Terran was a word used to refer to anything attributed to Humans or the planet Earth, which in Latin is "Terra". The Klingonese word for Human is "tera'ngan". (ENT: "Affliction"; Star Trek V: The Final Frontier)

Usage when referring to things attributed to Humans:

• "Terran" was used explicitly to refer to Humans...
  • ...in 2237, when Stark called young Spock a Terran and said that he could never be a true Vulcan. (TAS: "Yesteryear")
  • ...in 2268, when a female Romulan Commander asked Spock if he called himself Terran or Vulcan. (TOS: "The Enterprise Incident")
  • ...in 2287, when Ambassador St. John Talbot was referred to as a Terran by both the Vulcan Sybok and the Klingon Vixis. (Star Trek V: The Final Frontier)
  • ...in 2399, when Zani described the patrols of qalankhkai from the Qowat Milat as protecting Romulans and Terrans alike. (PIC: "Absolute Candor")
• The SS Mariposa used a Terran distress beacon created by the European Hegemony. (TNG: "Up The Long Ladder")
• Data referred to Terran conjugal rites. (Star Trek Nemesis)
• Shinzon saw a Romulan doctor who had experience in Terran illnesses. (Star Trek Nemesis)
• Kes referred to mashed potatoes with butter as a Terran delicacy. (VOY: "Elogium")
• Neelix claimed to have several Terran varieties of herbal teas. (VOY: "Unforgettable")
• Within The Adventures of Captain Proton, Humans were referred to as Earthlings rather than Terrans. (VOY: "Bride of Chaotica!")
• Narek, a Romulan, talked about ships departing from Earth as having Terran passenger lists. (PIC: "Absolute Candor")

Usage when referring to things attributed to Earth:

• The "Terran solar system" and "Terran system" were alternate names for the Sol system, which contained Earth. (Star Trek IV: The Voyage Home; TNG: "The Best of Both Worlds"; DS9: "Valiant")
• The term "Terran leech" was used to separate it from other leeches. (TNG: "Phantasms")