Δδ Delta is a letter in the Greek alphabet of Earth, originating in the early period of Human history.
It was used in the following contexts:
- Astronomical nomenclature
- Beth Delta I, an inhabited planet
- Carinae Delta V, a planet
- Delta system, a star system
- Delta 2, a moon
- Delta Charnock IX, a planet
- Delta Hart, a location
- Delta IV, an inhabited planet
- Delta IX, a planet
- Delta Aquilae, a star system
- Delta Herculis, a star system
- Delta Leporis, a star system
- Delta Muscae, a star system
- Delta Quadrant
- Delta Quadrant planets
- Delta Quadrant species
- "Delta Quadrant Boxing Commission"
- "Disaster in the Delta"
- "Delta Quadrant Symphony Orchestra"
- Delta Rana star system
- Delta Scorpii VII
- Delta Theta III
- Delta Triangle
- Delta Vega sector
- Delta Vega (Vulcan system)
- Memory Delta
- Omicron Delta region
- Sirius Delta, an inhabited location
- Authorization codes
- "Bashir-delta-5-7-alpha", Bashir's authorization code
- "Delta-2-1", Ruafo's authorization code
- "Kira-delta-5-4-7-alpha", Kira Nerys's security code
- "Picard-delta-5", Picard's authorization code
- "Troi-delta-2-9", Troi's authorization code
- File names
- "4-delta-1", a medical database file
- 6-6/delta, dozens are in the asymmetric encryption circuits
- Picard Delta One, a holodeck program
- Delta-5-9, a holodeck program
- 37-delta, a test sample
- Scientific terminology
- Delta band frequency / delta band emission, a frequency bandwidth
- Delta-compressed wavelength spectrum, frequencies used by VISORs
- Delta-series radioisotopes / delta isotopes / delta series radiation
- Delta radiation / delta rays
- Delta sleep
- Delta-vee, a type of measurement on a starship, such as the SS Mariposa or Charybdis
- Delta wave / delta wave frequency / old style delta waves
- Starfleet terminology
- "Delta-2", an attack formation
- "Delta sequence"/"Delta evasion plan"/"Sequence delta", an evasive maneuver
- Delta shift, the fourth duty shift on a Starfleet vessel
- Delta Team, Section 31 group
- Delta team, Voyager group
- "Pattern Delta", an evasive maneuver
- "Pattern delta-4", an evasive maneuver
- "Pattern delta-5", an evasive maneuver
- "Pattern Delta", an attack pattern
- "Pattern Delta-9-4", a photon torpedo spread
- Technology
- Delta Flyer (impostor)
- Delta Flyer-type
- Delta Outposts
- NX-Delta
- Science Station Delta-05 / Outpost Delta-05
- Real-world references