We found 9 dictionaries that define the word XYY:

General (7 matching dictionaries)

1. XYY: Vocabulary.com
2. xyy: Dictionary.com
3. XYY, XyY: Wikipedia, the Free Encyclopedia
4. Xyy: Rhymezone
5. xyy: FreeDictionary.org
6. xyy: Mnemonic Dictionary
7. XYY: TheFreeDictionary.com

Medicine (2 matching dictionaries)

8. XYY: MedTerms.com Medical Dictionary
9. XYY: Drug Medical Dictionary

(Note: See xyys as well.)

Definitions from WordNet (Xyy) ▸ noun:  (genetics) abnormal complement of sex hormones in a male who has two Y chromosomes Phrases: XYY syndrome, xyy karyotype, more... ▸ Words similar to XYY ▸ Usage examples for XYY ▸ Idioms related to XYY ▸ Wikipedia articles (New!) ▸ Popular adjectives describing XYY ▸ Words that often appear near XYY ▸ Rhymes of XYY ▸ Invented words related to XYY