Science and Technology
- Ara (constellation), "The Altar" constellation abbreviation, as standardized by the International Astronomical Union
- Ara (genus), a genus of macaw (parrot)
- AppleTalk Remote Access, a communications protocol
- ARA Audio Random Access, an extension to audio plug-in interfaces
- Arachidonic acid (also AA), as found in breast milk and infant formula
- L-arabinose operon (ara operon)
- Ant-based Routing Algorithm, a wireless mesh network routing protocol; see Swarm intelligence
- Askaryan Radio Array (ARA), a GZK neutrino detector based on the Askaryan effect and will be positioned in the Antarctic ice sheet
- The Arrow-Pratt measure of Absolute risk aversion
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“Science and technology multiply around us. To an increasing extent they dictate the languages in which we speak and think. Either we use those languages, or we remain mute.”
—J.G. (James Graham)