We found 52 dictionaries that define the word ap't:

General (28 matching dictionaries)

1. apt: Merriam-Webster
2. apt, apt: Oxford Learner's Dictionaries
3. APT, apt, apt: American Heritage Dictionary of the English Language
4. apt, apt: Collins English Dictionary
5. apt: Vocabulary.com
6. Apt, apt: Wordnik
7. apt: Cambridge Advanced Learner's Dictionary
8. APT, ap't, apt: Wiktionary
9. apt: Webster's New World College Dictionary, 4th Ed.
10. apt, apt: The Wordsmyth English Dictionary-Thesaurus
11. apt: Infoplease Dictionary
12. APT, apt: Dictionary.com
13. apt: Online Etymology Dictionary
14. apt: Cambridge Essential American English Dictionary
15. APT (Debian), APT (Package Manager), APT (disambiguation), APT (film), APT (package manager), APT (programming language), APT (software), APT, Apt. (album), Apt. (disambiguation), Apt. (film), Apt (Egyptian), Apt: Wikipedia, the Free Encyclopedia
16. Apt: Online Plain Text English Dictionary
17. apt: Webster's Revised Unabridged, 1913 Edition
18. apt: Rhymezone
19. apt: AllWords.com Multi-Lingual Dictionary
20. apt: Webster's 1828 Dictionary
21. APT: Stammtisch Beau Fleuve Acronyms
22. apt: FreeDictionary.org
23. apt: Mnemonic Dictionary
24. APT, apt: TheFreeDictionary.com
25. apt: Longman Dictionary of Contemporary English
26. apt: Merriam-Webster

Art (2 matching dictionaries)

27. apt-: A Cross Reference of Latin and Greek Elements
28. Glossary of Stamp Collecting Terms (No longer online)

Business (10 matching dictionaries)

29. MoneyGlossary.com (No longer online)
30. Travel Industry Dictionary (No longer online)
31. Numa DERIVATIVES ACRONYMS (No longer online)
32. INVESTORWORDS (No longer online)
33. APT: bizterms.net
34. APT: Glossary of research economics
35. APT: Management Dictionary
36. APT: Investopedia
37. apt, apt: Legal dictionary
38. APT, apt: Financial dictionary

Computing (3 matching dictionaries)

39. APT: Free On-line Dictionary of Computing
40. BABEL: Computer Oriented Abbreviations and Acronyms (No longer online)
41. APT, apt: Encyclopedia

Medicine (1 matching dictionary)

42. online medical dictionary (No longer online)

Miscellaneous (4 matching dictionaries)

43. APT: Acronym Finder
44. APT: Three Letter Words with definitions
45. AbbreviationZ (No longer online)
46. United States Postal Service Official Abbreviations (No longer online)

Slang (1 matching dictionary)

47. Apt, a.p.t: Urban Dictionary

Tech (3 matching dictionaries)

48. APT: GEOGRAPHIC INFORMATION SYSTEMS, CARTOGRAPHY, AND REMOTE SENSING
49. AUTOMOTIVE TERMS (No longer online)
50. Glossary of Meteorology (No longer online)

(Note: See aptly as well.)

Definitions from Wiktionary (aptly) ▸ adverb:  In an apt or suitable manner; fittingly; appropriately; suitably ▸ Also see aptly Similar: appropriate, apropos, apposite, liable, likely, disposed, given, minded, pertinent, intelligent, more... Opposite: inapt, unsuitable, inappropriate, unfit, inept Types: suitable, fitting, appropriate, germane, pertinent, material, more... Phrases: one-factor apt, one factor apt, Apt Pupil, APT Entertainment, Apt Cathedral, more... Adjectives: mock, amen, multifactor, larger, first, likely, old, more, parish, liable, positive ▸ Word origin ▸ Words similar to ap't ▸ Usage examples for ap't ▸ Idioms related to ap't ▸ Wikipedia articles (New!) ▸ Words that often appear near ap't ▸ Rhymes of ap't ▸ Invented words related to ap't