XXXX
See also
- Alternate forms: xxxx, XL, xl
- Previous: XXXIX (thirty-nine, 39)
- Next: XXXXI (forty-one, 413)
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Proper noun
- Tetrasomy X, a rare chromosomal disorder affecting females, caused by the presence of four X chromosomes instead of two present in the usual human karyotype.
- A brand of Australian lager.
x
