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3-letter words starting with a

  • atm — An ATM is a machine built into the wall of a bank or other building, which allows people to take out money from their bank account by using a special card. ATM is an abbreviation for 'automated teller machine'.
  • atn — arc tangent
  • ato — Australian Tax Office
  • atp — adenosine triphosphate; a nucleotide found in the mitochondria of all plant and animal cells. It is the major source of energy for cellular reactions, this energy being released during its conversion to ADP. Formula: C10H16N5O13P3
  • ats — Attribute Translation System
  • att — an ancient Siamese coin
  • atv — all-terrain vehicle: a vehicle with treads or wheels designed to travel on rough uneven ground
  • atx — (hardware, standard)   An open PC motherboard specification by Intel. ATX is a development of the Baby AT specification with the motherboard rotated 90 degrees in the chassis. The CPU and SIMM sockets have been relocated away from the expansion card slots meaning that all the slots support full-length cards. More I/O functions are integrated on the motherboard. As the longer edge of the board is now at the back of the chassis, there is more space for connectors; also, the I/O opening on the back panel of the chassis has been defined as double the previous height, allowing vendors to add extra on-board I/O functions over and above the standard. Most Pentium Pro boards use this form factor. As well as the motherboard size, layout, and placement, the ATX specification also includes requirements for power supply and fan specification and location. The full size ATX board measures 305mm wide by 244mm deep. There is also a Mini-ATX form factor, 284mm by 208mm.
  • auc — (indicating years numbered from the founding of Rome, taken as 753 bc) ab urbe condita or anno urbis conditae
  • aud — audit
  • aue — an exclamation of pain, distress, or astonishment
  • auf — (obsolete) A changeling or elf child; a child left by fairies.
  • aug — August
  • aui — 1.   (tool, product)   Adaptable User Interface. 2.   (networking)   Attachment Unit Interface.
  • auk — An auk is a seabird with a heavy body and short tail.
  • aul — A village encampment in the Caucasus, Central Asia or the Southern Urals.
  • aum — Om.
  • aup — Acceptable Use Policy
  • aus — Australia (international car registration)
  • aut — Association of University Teachers
  • aux — auxiliary
  • ava — at all
  • avc — additional voluntary contribution: one of a series of supplementary payments made to a pension fund
  • ave — the salutation “ave.”.
  • avg — average
  • avi — Audio Video Interleave
  • avm — Air Vice-Marshal
  • avn — aviation
  • avo — a unit of currency in Macao, worth one-hundredth of a pataca
  • avp — assistant vice-president
  • avs — Application Visualisation System
  • awa — Amalgamated Wireless (Australasia) Ltd
  • awd — all-wheel drive
  • awe — Awe is the feeling of respect and amazement that you have when you are faced with something wonderful and often rather frightening.
  • awg — American Wire Gauge
  • awk — a computer programming language
  • awl — a pointed hand tool with a fluted blade used for piercing wood, leather, etc
  • awn — any of the bristles growing from the spikelets of certain grasses, including cereals
  • aws — automatic warning system: a train safety system which gives audible warnings about the signals being passed, and can apply the brakes automatically if necessary
  • awt — Abstract Window Toolkit
  • awu — Australian Workers' Union
  • aww — Alternative form of aw.
  • axa — Achsah.
  • axe — An axe is a tool used for cutting wood. It consists of a heavy metal blade which is sharp at one edge and attached by its other edge to the end of a long handle.
  • aya — Alternative form of ayah.
  • aye — Aye means yes; used in some dialects of British English.
  • ayh — American Youth Hostels
  • ayn — ʿain.
  • ayo — (AAVE, informal) A greeting.
  • ayr — a port in SW Scotland, in South Ayrshire. Pop: 46 431 (2001)
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