A is for Allasamorph
B is for Bloody Cardassians!
C is for Cochrane's Companion
D is for Dilithium
E is for Elaan's Elassian Tears
F Farragut U.S.S.
G Groppler Zorn
H is for Hathaway U.S.S.
I Idran a star near the Gamma Quadrant terminus of the Bajoran Wormhole, explored in the 22nd Century by the Quadros 1 probe.
J is for Jem'Hadar
K is for Kirok
L Lucasian Chair, held by Data in Q's Anti-time alternate universe. (All Good Things)
M is for Minshara Class Planet (of course)
N is for Nerds who play Star Trek A To Z games
O Omega Directive, The
P is for Peter Kirk
Q is for Qo'nos
R Roykirk, Jackson (NOMAD Probe)
S is for Salamander
T is for Terok Nor
U is for Undiscovered Country, The
V is for V'Ger(sorry, Venus drug has already been used)
W is for 'What You Leave Behind'
X is for XO (As in Number One, Spock, and Riker.... not "A Kiss & A Hug"!)