We found 6 dictionaries that define the word S1:

General (2 matching dictionaries)

1. S(T)1, S1: Dictionary.com
2. S1 (Berlin), S1 (Munich), S1 (Nuremberg), S1 (Rhine-Main S-Bahn), S1 (Rhine-Ruhr S-Bahn), S1 (Stuttgart), S1 (Vienna), S1 (ZVV), S1 (classification), S1 (heart sound), S1 (military), S1 (producer), S1: Wikipedia, the Free Encyclopedia

Medicine (1 matching dictionary)

3. S1: Medical dictionary

Miscellaneous (2 matching dictionaries)

4. S(T)1, S1: Acronym Finder
5. AbbreviationZ (No longer online)

Slang (1 matching dictionary)

6. s1: Urban Dictionary

Phrases: s1 nuclease, s1 mapping, Socket S1, Saleen S1, Bentley S1, more... ▸ Words similar to S1 ▸ Usage examples for S1 ▸ Idioms related to S1 ▸ Wikipedia articles (New!) ▸ Words that often appear near S1 ▸ Rhymes of S1 ▸ Invented words related to S1