A is for Antimatter universe.
B is for the Beta Stromgren star system.
C is for Caitian stripper from Star Trek V.
D is for Delta IV. Where the men are men. And the women take celibacy oaths.
E is for Enterprise.
F is for Farragut.
G is for Geordi.
H is for Humans. Also known as Terrans. Earthmen. Earthers. One of the founding species and leaders of the Federation.
I is for Interstellar law.
J is for Janus VI, location of a Federation mining colony and the homeworld of the mysterious (and potentially lethal) Horta.
K is for KHAAAAAAAAAAN!!!
L is for Lunar Schooner, a recurring nickname used to describe human colonists who were born and/or grew up on Earth's Moon.
M is for Melkotians.
N is for Neptune. With her revolutionary new Warp Five engine, Enterprise NX-01 could travel from Earth to Neptune and back in just six minutes.
O is for Omicron Ceti 3. Where Spock stashed one of his bimbos.
P is for Photon torpedo weapon away!
Q is for Quantum torpedo away!
R is for Reed. Admirer of T'Pol's bum.
S is for Seven of Nine's bum. And other parts. Resistance is futile!
T is for Transwarp hubs. The Borg Collective had several of them located in different parts of our galaxy. One was destroyed by the crew of Voyager during their triumphant return to the Alpha Quadrant.
U is for Universal Armageddon.
V is for Valiant, a Defiant-class starship crewed and commanded by the Academy's Red Squad cadets during the Dominion War.
W is for Wormhole Aliens. "Their existense is linear."
X is for Xindi fear of humans.
Y is for Yosemite National Park, shore leave destination for the senior officers of the Enterprise-A early in the year 2287.