D1

The first diagonal artery that branches off from the left anterior descending (LAD) coronary artery. Similarly, D2 is the second diagonal branch of the LAD.

D1

Acronym	Definition
D1➣Dimension One Spas
D1➣First Diagonal (heart)
D1➣Dopamine Type 1 (neurotransmitter; also seen as D-1)
D1➣Device State 1 (partial-sleep power-down mode, computing)

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