ABA	Abscisic Acid
AFADESI-MSI	Air-Flow-Assisted Desorption Electrospray Ionization–Mass Spectrometry
Ag	Silver
Al	Aluminum
AMT	Accurate Mass and Time
AP-MALDI	Atmospheric Pressure–Matrix-Assisted Laser Desorption Ionization
APPI	Atmospheric Pressure Photoionization
AP-SMALDI-MSI	Atmospheric Pressure–Scanning Microprobe Matrix-Assisted Laser Desorption Ionization–Mass Spectrometry Imaging
CEST	Chemical Exchange Saturation Transfer
CHCA	Cyano-4-HydroxyCinnamic Acid
COSY	Homonclear COrrelation SpectroscopY
CSI	Chemical Shift Imaging
DAN	1,5-DiAminoNaphthalene
DESI	Desorption Electrospray Ionization
DHB	2,5-DihyHroxyBenzoic acid
DOSY	Diffusion-Ordered SpectroscopY
EMFAFTP	ElectroMagnetic-Field-Assisted Frozen Tissue Planarization
ESI	ElectroSpray Ionization
Fe3O4	Iron Oxide
FTICR-IMS	Fourier Transform Ion Cyclotron Resonance–Mass Spectrometry
GC	Gas Chromatography
HMBC	Heteronuclear Multiple Quantum Coherence
HRMS/MS	High-Resolution Tandem Mass Spectrometry
HSQC	Heteronuclear Single Quantum Coherence
HR-MAS	High-Resolution Magic Angle Spinning
IAA	Indole-3-Acetic Acid
IMS	Ion Mobility Spectrometry
LAAPPI	Laser Ablation Atmospheric Pressure Photoionization
LAESI	Laser Ablation Electrospray Ionization
LC-DAD	Liquid Chromatography–Diode Array Detection
JA	Jasmonic Acid
MALDI	Matrix-Assisted Laser Desorption Ionization
MGs	Monoterpene Glucosides
MIAs	Monoterpenoid Indole Alkaloids
MMP	Multi-MSI Processer
MRI	Magnetic Resonance Imaging
MSI	Mass Spectral Imaging
NMR	Nuclear Magnetic Resonance
OA	Organic Acid
P	Phosphorus
PCA	Principal Component Analysis
PTFE	Porous PolyTetraFluoroEthylene
QtoF	Quadropole Time of Flight
ROI	Region of Interest
ROS	Reactive Oxygen Species
SA	Salicylic Acid
SIMS	Secondary Ion Mass Spectrometry
SSC	Spatial Shrunken Centroids
THAP	2,4,6-TriHydroxyAcetoPhenone
Tims-TOFMS	Trapped Ion Mobility Spectrometry–Time-of-Flight Mass Spectrometry
TOCSY	Total Correlation Spectroscopy
WO3	Tungsten Oxide
5GG	1,2,3,4,6-penta-O-Galloyl-β-D-Glucopyranose
P-AA	9-AminoAcidine