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Definition of A1
1. Noun. A standard paper size, defined by ISO 216 to have dimensions: 841 x 594 mm (840.90 x 594.60 mm) ¹
2. Adjective. In good health. ¹
3. Adjective. In excellent or top condition. ¹
4. Proper noun. Under the International Union of Railways ("UIC") classification system, a steam locomotive that has two coupled driving wheels followed by two trailing wheels, with no leading wheels; also called an 0-2-2. ¹
5. Adjective. first rate or excellent ¹
6. Adjective. (context: of a ship) in first class condition ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of A1
A. E. F. A. E. Housman A. E. Kennelly A. E. W. Mason A. N. Other A. Noam Chomsky A. and M. A. testudineus A/B A/C | A/G A/G ratio A/R A/S A0 A1 (current term) A10 A2 A20 gate A2S | A2Ss A3 A4 A440 A5 A6 A7 A8 A9 |