Common Abbreviation I may use:
Medicine, Neuroscience, & Biology:
CNS = Central Nervous System
PNS = Peripheral Nervous System
ANS = Autonomic Nervous System
ETC = Electron Transport Chain
ACh = Acetyl-choline
DA = Dopamine
5HT = Serotonin
BDNF = Brain Derived Neurotophic Factor
NGF = Neurotrophin-4
GDNF = Glial Derived Neurotophic Factor
NT = Neurotypical
Meteorology:
TC = Tropical Cyclone
STC = Severe Tropical Cyclone
SubTC = Subtropical Cyclone
TD = Tropical Depression
TS = Tropical Storm
MH = Major Hurricane
SD = Subtropical Depression
SS = Subtropical Storm
XT = Extratropical/Post-Tropical Transition
XTC = Extratropical Cyclone
CAPE = Convective Available Potential Energy
MSLP = Mean Sea Level Pressure
SST = Sea Surface Temperatures
RH = Relative Humidity
DP = Dew Point
Kts = Knots
ACE = Accumulate Cyclone Energy
1m = 1 Minute Average Winds
10m = 10 Minute Average Winds
LLCC = Low Level Cyclonic/Central Circulation
DT = Dvorak Technique Score
CDO = Central Dense Overcast
Note: This will likely change in future in which I'll post a new version, unpin and repin the new, I've likely missed some abbreviations so if you see me use some that aren't here, nor defined in the toot itself please let me know.