Hit
The term Hit refers to skills which hit opponents. Hitting an opponent allows on-hit effects to take effect.
These include 
Voll's ProtectorVoll's Protector
Holy ChainmailArmour: (388-582)
Energy Shield: (82-122)
Movement Speed: -5%Requires Level 35, 53 Str, 53 Int(100-150)% increased Armour and Energy Shield
50% reduced maximum Mana
Gain a Power Charge for each Enemy you hit with a Critical Strike
Inner ConvictionAlthough a great leader during the war,
Voll proved disastrous in times of peace.
's unique stat, Life Gain on Hit, Module Error: No skills found with q_where = skill.active_skill_name="Blind", Module Error: No skills found with q_where = skill.active_skill_name="Chance to Ignite", Added Damage support gems and Module Error: No skills found with q_where = skill.active_skill_name="Culling Strike" among others.
This is in contrast to degeneration, debuffs or auras which will not apply on-hit effects.