A1

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

How to use A1 in a sentence

SGR-A1 scans autonomously, and once it detects suspected intruders alerts the operator.
Smoke Rings, Mystery Backpacks and Gun-Toting Robots: The Weird Wartech of the Korean Conflict|Kyle Mizokami|April 3, 2014|DAILY BEAST
The robot, built by Samsung, is known as SGR-A1, or Security Guard Robot A1.
Smoke Rings, Mystery Backpacks and Gun-Toting Robots: The Weird Wartech of the Korean Conflict|Kyle Mizokami|April 3, 2014|DAILY BEAST
This makes the SGR-A1 much more expensive than the average South Korean draftee private, who earns less than $100 a month.
Smoke Rings, Mystery Backpacks and Gun-Toting Robots: The Weird Wartech of the Korean Conflict|Kyle Mizokami|April 3, 2014|DAILY BEAST
If each SGR-A1 robot can stand watch for just two years, South Korea comes out ahead.
Smoke Rings, Mystery Backpacks and Gun-Toting Robots: The Weird Wartech of the Korean Conflict|Kyle Mizokami|April 3, 2014|DAILY BEAST

A1: Joshua, I think the most honest answer I can give to this two-part question is: Yes.
Justin Bieber's Spiritual Crisis|Joshua DuBois|January 26, 2014|DAILY BEAST
The east window in this church has been classed as the A1 of modern painted windows.
Showell's Dictionary of Birmingham|Thomas T. Harman and Walter Showell
The increasing demand for graves led to the formation of the cubicula A1 to A6, as well as others in the interior of the area.
The Catacombs of Rome|William Henry Withrow
This area, multiplied by 2, gives the same result as the sum of both wings on A1 and A2.
Langley Memoir on Mechanical Flight, Parts I and II|S. P. (Samuel Pierpont) Langley and Charles M. (Charles Matthews) Manly
Computed from three sheets of tracings, A1 and A2 comprising the entire area of both wings; B, a single wing.
Langley Memoir on Mechanical Flight, Parts I and II|S. P. (Samuel Pierpont) Langley and Charles M. (Charles Matthews) Manly
The position of the root of the wing.This is indicated on the tracing A1.
Langley Memoir on Mechanical Flight, Parts I and II|S. P. (Samuel Pierpont) Langley and Charles M. (Charles Matthews) Manly