In a family, a sibling was an offspring born from the same parent or parents as another offspring. (DS9: "Family Business") In the case of multiple births, more than one sibling (i.e. twin, triplet, or quadruplet) were born at one time. (DS9: "Vortex", et al.) One who did not have any siblings were referred to as an only child.
Trill symbionts had to move on from their previous hosts' lives, even forgetting any siblings the host may have had. (DS9: "Rejoined")
In 2153, Doctor Phlox asked T'Pol if she had any siblings. This was done as a prelude to soliciting her help with Trip Tucker, who was grieving the loss of his sister Elizabeth in the Xindi incident. (ENT: "The Xindi")
Haliz recruited Kazon to be fighters as soon as they were old enough to protect their younger siblings. (VOY: "Initiations")
As of 2374, the crew of USS Voyager knew little about Annika Hansen, such as whether she had any siblings. (VOY: "The Gift")
Siblings[]
Brother[]
The male sibling was known as the brother. (TOS: "What Are Little Girls Made Of?", et al.) In the Ferengi language, the term was translated as "yoba". (DS9: "Little Green Men")
A child who has a brother shared through one parent was known as a half-brother. Spock and Sybok were half-brothers; both were sons of Sarek, but both had different mothers. (Star Trek V: The Final Frontier)
Sister[]
The female sibling was known as the sister. (Star Trek II: The Wrath of Khan, et al.) A sister who was not biologically related but rather by marriage was known as a stepsister. (TNG: "Parallels"; DS9: "The Magnificent Ferengi") Ships that were similar to each other were, in keeping with the tradition of referring to a ship as a "she", known as sister ships.
Examples[]
List of full siblings[]
- List of full siblings:
- Arcana, Dahj Asha, Soji Asha, Beautiful Flower, Codex, Jana, Rune, Saga, Sutra, and various others
- Ezri Dax, Janel Tigan, and Norvo Tigan
- Demmas and Ameron
- Duras, Lursa, and B'Etor
- Kahless and Morath
- Karden and Kinell
- Kathryn Janeway and Phoebe Janeway
- Kira Nerys, Kira Reon, and Kira Pohl
- George Samuel and James T. Kirk
- Geordi and Ariana La Forge
- Alandra and Sidney La Forge
- Travis Mayweather, Paul Mayweather, and their sister
- Meribor and Batai
- Narek, Narissa, and their brother
- Neelix, Alixia, and their siblings
- Manu and La'an Noonien-Singh
- Molly and Kirayoshi O'Brien
- Obrist and his brother
- Robert and Jean-Luc Picard
- Jake and Willie Potts
- Quark and Rom
- Devinoni Ral and his four siblings
- Malcolm and Madeline Reed
- Connor Rossa and his brother
- Sarjenka and her brothers
- Saru and Siranna
- Seska and her brother
- Judith Sisko and her two brothers
- Simon Tarses and his brother
- D'Vana and D'Erika Tendi
- Kestra and Deanna Troi
- Lwaxana Troi and her sister
- Thaddeus and Kestra Troi-Riker
- Charles Tucker III, Elizabeth Tucker, and their brother
- Aquiel Uhnari and Shianna
- Vel and Piri
- Worf and Kurn
- Natasha and Ishara Yar
- Yranac and his sister
- Zeus and Hera
List of multiple birth siblings[]
- List of multiple birth siblings:
- Ah-Kel and Ro-Kel
- Apollo and Artemis
- Arcana and Saga
- Dahj and Soji Asha
- Azan and Rebi
- Codex and Rune
- Jenny and Megan Delaney
- Gorn octuplets
- Jana and Sutra
List of half-siblings[]
- List of half-siblings:
- Aphrodite, Apollo, Artemis, Athena, Hermes, and Hephaestus
- Wesley Crusher and Jack Crusher, half-brothers
- Benjamin Sisko, half-brother of Judith Sisko and her two brothers
- Jake Sisko, half-brother of Benjamin Sisko's unborn (as of 2375) child
- Spock and Sybok, half-brothers
- Tora Ziyal
- Ian Troi, half-brother of Thaddeus and Kestra Troi-Riker
- Kestra and Deanna Troi, half-sisters of Lwaxana Troi's unborn (as of 2372) son
List of fictional siblings[]
- List of fictional siblings:
- Blaine and Jack (VOY: "Future's End")
- Beatrice Burleigh and Henry Burleigh (VOY: "Cathexis", "Learning Curve", "Persistence of Vision")
- Piotr Chekov, the fictional brother of the very real Pavel Chekov (TOS: "Day of the Dove")
- Dara and her brother (TNG: "Hero Worship")
- One of Three, Two of Three, and their unnamed sibling (VOY: "Author, Author")
- Seb-Cheneb and Seb-Natan (PIC: "The End is the Beginning", "Absolute Candor", "Et in Arcadia Ego, Part 2")
- Tweedledum and Tweedledee (TOS: "Plato's Stepchildren")
- The Twin Mistresses of Evil (VOY: "Thirty Days")
- The Unnamed fictional brother of the very real Jonathan Archer (ENT: "North Star")