A silicon based lifeform is a corporeal lifeform which uses silicon as the basis of its structure and life functions rather than carbon.
Silicon based lifeforms
- Crystalline Entity
- Excalbian of Excalbia. (TOS: "The Savage Curtain")
- Horta of Janus VI. (TOS: "The Devil in the Dark")
- Silicon-based parasite. (VOY: "The Disease")
- Silicon-based virus. (ENT: "Observer Effect")