variants or D and X
plural D&Xs

Word History

First Known Use

1993, in the meaning defined above

Time Traveler
The first known use of D&X was in 1993

Browse Nearby Words

Cite this Entry

“D&X.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/D%26X. Accessed 12 Jun. 2026.

Medical Definition

D&X

1 of 2 noun
variants or D and X
ˈdē-ən(d)-ˈeks

Dx

2 of 2 abbreviation
variants or DX
1
diagnosis
Dx: viral pneumonia
DX codes
2
diagnostic
Dx tests
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