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Delta Connection
Delta Connection is Delta Air Lines' regional airline brand, under which partner carriers Endeavor Air, Republic Airways, and SkyWest operate flights using Delta's DL code.
Delta encoding
Delta encoding is a data compression technique that stores differences between successive values or versions of data, underpinning revision control, software patching, and storage systems.
Delta ferrite
Delta ferrite is a magnetic, body-centered cubic iron phase retained, typically at a few weight percent, in austenitic stainless steel weld metal, where controlled amounts prevent hot cracking.
Delta II
The Delta II was an American expendable launch vehicle that flew 155 missions from 1989 to 2018, launching GPS satellites and NASA missions including the Mars rovers.
Delta Intelligence
Delta Intelligence (德塔智能) is a Beijing startup founded in 2026, spun out of BIGAI, that develops foundation models for humanoid robots and raised nearly RMB 500 million in 2026.
Delta IV
Delta IV, also known as Delta 4, was an American expendable rocket family developed by Boeing, whose Heavy variant was the United States' primary heavy-lift rocket.
Delta IV Heavy
Delta IV Heavy, also known as Delta 4 Heavy, was a heavy-lift rocket flown by United Launch Alliance from 2004 to 2024, largely for national security missions.
Delta Lake
Delta Lake, born as Project Tahoe at Databricks in 2017, is an open-source ACID table format over Parquet files in data lakes, using a JSON transaction log (delta_log), MVCC, time travel, and connectors for Spark, Flink, and Trino.
Delta modulation
Delta modulation is an analog-to-digital encoding method that represents a waveform with one bit per sample, sending whether the signal rose or fell; it underlies sigma-delta converters.
Delta Oil Pipeline (United States)
The Delta Oil Pipeline is a Shell-owned crude oil pipeline carrying Heavy Louisiana Sweet crude from the eastern Gulf of Mexico to Louisiana terminals and refineries.
Delta Programme
The Delta Programme (Deltaprogramma) is the Netherlands' national program for flood protection, freshwater supplies, and climate-resilient planning, directed by a Delta Commissioner and financed by a Delta Fund under the 2012 Delta Act.
Delta Queen
The Delta Queen is an American sternwheel steamboat built in 1926, the flagship overnight passenger steamboat of the Mississippi and Ohio river system from 1948 to 2008.
Delta robot
The Delta robot is a parallel robot with three purely translational degrees of freedom, invented by Reymond Clavel at EPFL in 1985 for handling small, light objects.
Delta rule
The delta rule, also called the Widrow–Hoff rule or LMS rule, is a supervised learning rule for neural networks developed by Bernard Widrow and Marcian Hoff in 1960.
Delta Sharing
Delta Sharing is an open REST protocol launched by Databricks in 2021 under the Linux Foundation for secure zero-copy sharing of live Delta Lake and Parquet datasets across platforms and clouds; it evolved into OpenSharing in 2026.
Delta Tau Power PMAC
The Delta Tau Power PMAC is a family of multi-axis motion controllers and embedded machine computers by Delta Tau Data Systems, now sold by Omron under names like CK3E.
Delta wing
The delta wing is a triangular, highly swept, low-aspect-ratio aircraft wing planform named for the Greek letter Δ, which became the standard shape for supersonic aircraft.
Delta Works
The Delta Works, or Deltawerken, are dams and storm surge barriers in the Netherlands built after the 1953 North Sea flood to protect the delta.
Delta-class submarine
The Delta class (Дельта) is a series of Soviet nuclear-powered ballistic missile submarines built in four versions, the backbone of the Soviet and Russian strategic fleet since 1973.
Delta-K
Delta-K is the restartable hypergolic second stage of the Delta II rocket, powered by an Aerojet AJ10-118K engine, flown from 1989 to the final Delta II flight.
Delta-Mendota Canal
The Delta-Mendota Canal is an irrigation canal in central California, built from 1946 to 1952 to carry water from the Sacramento-San Joaquin Delta south to the San Joaquin Valley.
Delta-sigma modulation
Delta-sigma modulation, also called sigma-delta, is an analog-to-digital conversion method that oversamples the signal and uses feedback to shape quantization noise out of the signal band.
Delta-v (Δv)
Delta-v (Δv, delta-vee) is the change in velocity a spacecraft's propulsion system can produce, measured in km/s and serving as the basic currency of mission design, since required propellant grows exponentially with it.
Delta-v budget
A delta-v budget is the sum of all velocity changes a spacecraft must generate over its mission, from launch correction through orbit maintenance to disposal, plus the propellant those maneuvers require.
Deltacommissie
The Deltacommissie, or Delta Commission, is the name of two Dutch state advisory committees on water safety, appointed after the 1953 flood and again in 2007.
Delvaux (company)
Delvaux: Belgian luxury leather goods house founded in Brussels in 1829 by Charles Delvaux; maker of the Brillant, Tempête, and Pin handbags; wholly owned by Richemont since 2021; royal purveyor to Belgium since 1883.
Demand paging
Demand paging is an operating system memory-management technique in which pages are loaded into main memory only when first referenced, with unused pages staying on disk.
Demand response
Demand response is the reduction or shift in electricity consumption by customers in response to price signals, incentive payments, or grid reliability needs, helping balance supply and demand.
Demand-controlled ventilation
Demand-controlled ventilation (DCV) automatically adjusts a building's outdoor air supply to match actual need, usually measured by CO2 sensors, avoiding over-ventilation of partly occupied spaces.
Demarcation point
A demarcation point, also called a demarc, is where a telecommunications provider's facilities end and the customer's premises wiring begins, dividing repair responsibility between carrier and customer.