DC stands for 'Detective Comics', which was the title of the comic book series where Batman made his debut in issue #27 (1939). The company officially adopted the name DC Comics, effectively making it 'Detective Comics Comics', a nod to its historic roots in pulp mystery and crime fiction before the superhero boom.

The Trinity refers to the three most prominent and influential heroes in the DC Universe: Superman, Batman, and Wonder Woman. They represent distinct archetypes—Superman is the alien paragon of hope and power, Batman is the human pinnacle of justice and intellect, and Wonder Woman is the divine warrior of truth and peace. Together, they form the leadership core of the Justice League.

'Crisis on Infinite Earths' (1985) was a landmark crossover event designed to simplify DC's complex multiverse. It featured the death of major characters like The Flash (Barry Allen) and Supergirl and resulted in the merging of multiple parallel Earths into a single continuity. It set the standard for all future company-wide comic book events and reboots.

A Green Lantern power ring is a weapon fueled by the user's willpower. It can create 'constructs' of hard light in any shape or form the wielder imagines, from simple shields to complex machinery. The ring also provides flight, force fields, and universal translation. Its only limits are the wielder's will, imagination, and the ring's charge, which must be replenished by a Power Battery.

The Speed Force is an extra-dimensional energy field that gives speedsters like The Flash their powers. It is not just a source of speed but a fundamental cosmic force that moves time and space forward. Speedsters can tap into it to run faster than light, phase through solid objects, travel through time, and even heal rapidly. It serves as a valhalla for speedsters when they die.

The Anti-Life Equation is a transcendental mathematical formula that allows one to control the free will of any sentient being. Darkseid, the tyrant of Apokolips, seeks it to enslave the entire multiverse. The equation mathematically proves that hope, love, and freedom are meaningless, breaking the spirit of anyone who hears or comprehends it.

The Bat-Family is an informal network of vigilantes operating in Gotham City under Batman's guidance. Key members include Nightwing (Dick Grayson, the first Robin), Batgirl/Oracle (Barbara Gordon), Red Hood (Jason Todd), Red Robin (Tim Drake), and Robin (Damian Wayne, Bruce's son). Extended members include Batwoman, Spoiler, Orphan, and Alfred Pennyworth, who serves as the family's anchor.

Kryptonite is radioactive debris from Superman's home planet. Green Kryptonite weakens Kryptonians and can kill them with prolonged exposure. Red Kryptonite has unpredictable, bizarre effects (transformation, mood swings). Gold Kryptonite permanently removes powers. Blue Kryptonite affects Bizarro creatures. Black Kryptonite splits a Kryptonian into good and evil entities.

'Flashpoint' was a 2011 storyline where Barry Allen (The Flash) traveled back in time to save his mother, inadvertently creating a dark, dystopian alternate timeline. Upon trying to fix it, the timeline didn't reset perfectly, leading to the creation of 'The New 52' universe, which rebooted the history and costumes of almost every DC character for a modern audience.

Magic in the DC Universe is a chaotic, primal force that defies the laws of physics, making it one of Superman's few vulnerabilities. It is wielded by characters like Zatanna (who speaks spells backwards), Dr. Fate (who uses the Helmet of Nabu), and John Constantine. Magic originates from various sources, including the Lords of Order and Chaos, and exists separately from the scientific meta-human abilities of characters like The Flash.