A9, A.9, A09, A 9 or A-9 may refer to

Science

ATC code A09 A09A Digestion, Digestives, including enzymes A09AA Enzyme preparations :A09AA01 Diastase :A09AA02 Multienzymes (lipase, protease, etc.) :A09AA03 Pepsin :A09AA04 Tilactase A09AB Acid preparations :A09AB01 Glutamic acid hydrochloride :A09AB02 Beta ...

''Digestives, including enzymes'', a subgroup of the Anatomical Therapeutic Chemical Classification System * Biolimus A9, an immunosuppressant * British NVC community A9, the ''Potamogeton natans'' community, one of the aquatic communities of the British National Vegetation Classification * HLA-A9, a broad antigen serogroup of Human MHC HLA-A * Subfamily A9, a

Rhodopsin-like receptors Rhodopsin-like receptors are a protein family, family of proteins that comprise the largest group of G protein-coupled receptors. Scope G-protein-coupled receptors, GPCRs, constitute a vast protein family that encompasses a wide range of funct ...

subfamily

Technology

* A9home, a small form factor computer * A9.com, a website and search engine by Amazon.com *

Apple A9 The Apple A9 is a 64-bit ARM-based system-on-chip (SoC) designed by Apple Inc., part of the Apple silicon series. Manufactured for Apple by both TSMC and Samsung, it first appeared in the iPhone 6s and 6s Plus which were introduced on September ...

, a 64-bit system on a chip (SoC) designed by Apple Inc. * Hanlin eReader A9, an ebook reader

Aviation

* Breda A.9, a 1928 Italian biplane trainer aircraft * CallAir A-9 Quail, an agricultural aircraft * Georgian Airways's IATA code * Lockheed A-9, a ground attack aircraft based on the Lockheed YP-24 fighter prototype * Northrop YA-9, a ground-attack aircraft that competed with the Fairchild Republic A-10 Thunderbolt II

Military

* A9, a military staff designation in the

continental staff system A military staff or general staff (also referred to as army staff, navy staff, or air staff within the individual services) is a group of officers, enlisted, and civilian staff who serve the commander of a division or other large milita ...

* A 9, a Swedish artillery regiment * A9, a model of German Aggregate Series Rocket from World War II * Cruiser Mk I (A9), a British tank

Music

* A9 (band), a Japanese rock band originally named Alice Nine * A-9, a Gibson mandolin guitar model

Other uses

* A9 (classification), an amputee sport classification * A9 road, in several countries, see List of A9 roads * A9, an international

ISO 216 ISO 216 is an international standard for paper sizes, used around the world except in North America and parts of Latin America. The standard defines the "A", "B" and "C" series of paper sizes, which includes the A4, the most commonly availabl ...

paper size standard (37×52 mm) * A-9 Vigilance, a fictional starfighter from the Star Wars universe * Arrows A9, a 1986 British racing car * , a 1988 diving support vessel for the Royal New Zealand Navy * HMS ''A9'', an A-class submarine of the Royal Navy *

Réti Opening The Réti Opening is a hypermodern chess opening whose "traditional" or "classic method" begins with the moves: : 1. Nf3 d5 : 2. c4 White attacks Black's pawn from the , which may occasion 2...dxc4. White may couple this plan with a fian ...