We found 19 dictionaries that define the word installer:

General (11 matching dictionaries)

1. installer: Merriam-Webster
2. installer: Oxford Learner's Dictionaries
3. installer: Collins English Dictionary
4. Installer, installer: Wordnik
5. installer: Cambridge Advanced Learner's Dictionary
6. installer: Wiktionary
7. installer: Dictionary.com
8. Installer (Mac OS X), Installer (OS X), Installer (macOS), Installer (programming language), Installer: Wikipedia, the Free Encyclopedia
9. installer: AllWords.com Multi-Lingual Dictionary
10. installer: TheFreeDictionary.com
11. installer: Longman Dictionary of Contemporary English

Business (1 matching dictionary)

12. installer: Legal dictionary

Computing (3 matching dictionaries)

13. installer: Free On-line Dictionary of Computing
14. Installer: Tech Terms Computer Dictionary
15. installer: Encyclopedia

Medicine (1 matching dictionary)

16. online medical dictionary (No longer online)

Miscellaneous (1 matching dictionary)

17. installer: Idioms

Tech (2 matching dictionaries)

18. AUTOMOTIVE TERMS (No longer online)
19. Sweetwater Music (No longer online)

(Note: See install as well.)

Definitions from Wiktionary (installer) ▸ noun:  One who installs. ▸ noun:  (computing) A program that installs software in a computer and prepares it for use. Similar: instiller, setter-up, institutor, insulator, deployer, insertor, establisher, planter, instillator, placer, more... Types: electrician, plumber, carpenter, roofer, painter, landscaper, HVAC technician, handyman, more... Phrases: Windows Installer, microsoft installer, Universal USB Installer, App Installer, Windows Installer CleanUp Utility, more... Adjectives: professional, graphical, experienced, local, windows, own, residential, qualified, electrical, good, original Colors:     blue,     green,     yellow,     orange,     red, more... ▸ Words similar to installer ▸ Usage examples for installer ▸ Idioms related to installer ▸ Wikipedia articles (New!) ▸ Popular adjectives describing installer ▸ Words that often appear near installer ▸ Rhymes of installer ▸ Invented words related to installer