Disintegrate
You launch a green ray at a target you can see within range. The target can be a creature, a nonmagical object, or a creation of magical force, such as the wall created by Wall of Force.
A creature targeted by this spell makes a Dexterity saving throw. On a failed save, the target takes 10d6 + 40 Force damage. If this damage reduces it to 0 Hit Points, it and everything nonmagical it is wearing and carrying are disintegrated into gray dust. The target can be revived only by a True Resurrection or a Wish spell.
This spell automatically disintegrates a Large or smaller nonmagical object or a creation of magical force. If such a target is Huge or larger, this spell disintegrates a 10-foot-Cube portion of it.
Using a Higher-Level Spell Slot. The damage increases by 3d6 for each spell slot level above 6.
Disintegrate 5e 2024 vs. 2014 edition differences
The 2024 version clarifies that disintegration occurs only if damage reduces a creature to 0 HP, and specifies disintegration applies to a 10-foot cube of Huge or larger objects. The 2014 version states disintegration occurs if HP drops to 0, and disintegrates a 10-foot cube of Huge or larger objects. The 2024 version omits the phrase "or a creation of magical force" in the damage description, but both specify the same damage scaling.