We found 16 dictionaries that define the word z:

General (6 matching dictionaries)

1. z: Longman Dictionary of Contemporary English
2. z: Merriam-Webster
3. -Z, z': Wordnik
4. -z, z-: Wiktionary
5. Z (Cyrillic), Z (EP), Z (My Morning Jacket album), Z (New York City Subway service), Z (TV channel), Z (cartoonist), Z (cycling team), Z (disambiguation), Z (film), Z (letter), Z (movie), Z (record label), Z (video game): Wikipedia, the Free Encyclopedia
6. Z (the letter): American-Britih Dictionary

Business (1 matching dictionary)

7. Z (file format): Legal dictionary

Computing (3 matching dictionaries)

8. BABEL: Computer Oriented Abbreviations and Acronyms (No longer online)
9. Glossary of Internet Terms (No longer online)
10. Z (Atomic number), Z (file format): Encyclopedia

Medicine (2 matching dictionaries)

11. Z: Merriam-Webster Medical Dictionary
12. Z (Atomic number), Z (file format): Medical dictionary

Miscellaneous (1 matching dictionary)

13. AbbreviationZ (No longer online)

Science (1 matching dictionary)

14. Z-: Eric Weisstein's World of Mathematics

Slang (2 matching dictionaries)

15. z, z, z, Z: Green’s Dictionary of Slang
16. The Z, Z--: Urban Dictionary

(Note: See z's as well.)

Definitions from Wiktionary (Z) ▸ noun:  A member of Generation Z. ▸ noun:  (slang) Z-drug. Similar: pizzazz, dynamism, oomph, pizzaz, catch some Zs, grab some Zs, high noon, monthly meeting, morning prayers, hell week, more... Opposite: a, B, C, D, E Types: zed, zee, izzard, more... Phrases: z axis, Z score, z dna, Z particle, a to z, more... ▸ Words similar to z ▸ Usage examples for z ▸ Idioms related to z ▸ Wikipedia articles (New!) ▸ Popular adjectives describing z ▸ Words that often appear near z ▸ Rhymes of z ▸ Invented words related to z