Usually means: Race 1 in a series.
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We found 5 dictionaries that define the word r1:

General (2 matching dictionaries)
  1. R1: Dictionary.com
  2. R1 (New York City Subway car), R1 (nuclear reactor), R1: Wikipedia, the Free Encyclopedia

Miscellaneous (1 matching dictionary)
  1. R1: Acronym Finder

Science (1 matching dictionary)
  1. R1: Cytokines & Cells Online Pathfinder Encyclopaedia

Slang (1 matching dictionary)
  1. R1: Urban Dictionary

Google, News, Images, Wikipedia, Reddit, BlueSky

Similar:
carboxylate, A, 1A, a1, acetylcholine, activating, antigen, ao, AP, B2, more...

Types:
r2, r3, r4, r5, r6, r7, r8, r9, more...

Phrases:
R1 RCM, Haplogroup R1, Praga R1, Jaguar R1, Remington 1911 R1, more...



▸ Words similar to r1

▸ Usage examples for r1

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▸ Rhymes of r1

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Similar:
carboxylate, A, 1A, a1, acetylcholine, activating, antigen, ao, AP, B2, more...

Types:
r2, r3, r4, r5, r6, r7, r8, r9, more...

Phrases:
R1 RCM, Haplogroup R1, Praga R1, Jaguar R1, Remington 1911 R1, Hawker Siddeley Nimrod R1, Subaru R1, more...



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