We found 32 dictionaries that define the word aphid:

General (26 matching dictionaries)

1. aphid: Merriam-Webster
2. aphid: Oxford Learner's Dictionaries
3. aphid: American Heritage Dictionary of the English Language
4. aphid: Collins English Dictionary
5. aphid: Vocabulary.com
6. Aphid, aphid: Wordnik
7. aphid: Cambridge Advanced Learner's Dictionary
8. aphid: Wiktionary
9. aphid: Webster's New World College Dictionary, 4th Ed.
10. aphid: The Wordsmyth English Dictionary-Thesaurus
11. aphid: Infoplease Dictionary
12. Aphid, aphid: Dictionary.com
13. aphid: Online Etymology Dictionary
14. Aphid: Wikipedia, the Free Encyclopedia
15. Aphid: Online Plain Text English Dictionary
16. aphid: Webster's Revised Unabridged, 1913 Edition
17. aphid: Rhymezone
18. Aphid: AllWords.com Multi-Lingual Dictionary
19. aphid: Stammtisch Beau Fleuve Acronyms
20. aphid: FreeDictionary.org
21. aphid: Mnemonic Dictionary
22. aphid: TheFreeDictionary.com
23. aphid: Longman Dictionary of Contemporary English
24. aphid: Merriam-Webster

Art (1 matching dictionary)

25. aphid-: A Cross Reference of Latin and Greek Elements

Computing (1 matching dictionary)

26. aphid: Encyclopedia

Medicine (2 matching dictionaries)

27. online medical dictionary (No longer online)
28. aphid: Medical dictionary

Miscellaneous (1 matching dictionary)

29. APHID: Acronym Finder

Slang (1 matching dictionary)

30. aphid: Urban Dictionary

(Note: See aphids as well.)

Definitions from Wiktionary ( ) ▸ noun:  A sap-sucking insect pest of the superfamily Aphidoidea; an aphidian. Similar: aphidoid, aphidian, pea aphid, aphidiine, aphidine, aphidiid, aphid midge, aphodiid, leaf aphid, apterate, more... Opposite: predator, beneficial insect, ladybug Types: greenfly, blackfly, woolly aphid, corn root aphid, rose aphid, foxglove aphid, green peach aphid, more... Phrases: pea aphid, apple aphid, woolly aphid, potato aphid, cabbage aphid, more... Adjectives: pea, green, woolly, black, russian, rosy, single, sycamore, female, oat, wooly Colors:     green,     yellow,     black,     brown,     red, more... ▸ Word origin ▸ Words similar to aphid ▸ Usage examples for aphid ▸ Idioms related to aphid ▸ Wikipedia articles (New!) ▸ Popular adjectives describing aphid ▸ Words that often appear near aphid ▸ Rhymes of aphid ▸ Invented words related to aphid