It is your lucky day. I actually started to compile a glossary a while back. (I remember how difficult it was for the first few weeks with all the abbreviations.) Anyway, here's what I got...
SUPPLEMENTS
LXT = Lean XTreme (Designer Supplements)
RXT = Rebound XT (Anabolic XTreme)
MP = Melting Point (Designer Supplements)
GXR = Glucophase XR (Designer Supplements)
RR = Rebound Reloaded (Designer Supplements)
PF = PowerFULL (USP Labs)
StimX = StimulantX (Anabolic XTreme)
JW = Jungle Warfare (ALRI)
PP = pheraplex (aka "Phera") (can also refer to clones)
H50 = halodrol (can also refer to clones)
ZOL = prostanozol (can also refer to clones)
EMax = ErgoMax LMG (Anabolic XTreme)
COMPANIES
DS = Designer Supplements
AX = Anabolic XTreme
NATURAL INGREDIENTS
RYR = red yeast rice
CEE = creatine ethyl ester
fen = fenugreek
ALCAR = acetyl-l-carnitine
NAC = N-Acetyle-Cysteine
MT = milk thistle
ALA = alpha lipoic acid
CLA = conjugated linoleic acid
drol = Anadrol
dbol = Dianabol
slin = insulin
AI = aromatase inhibitor
SERM = selective estrogen receptor modulators (e.g. Nolvadex [tamoxifen], Clomid [clomiphene], toremifene)
PH = prohormone
LBM = lean body mass
BF = body fat
CHO = carbohydrate
HRT = hormone replacement therapy
PCT = post cycle therapy
PWO = post workout