ADP	Adenosine Diphosphate
ATP	Adenosine Triphosphate
CTSI	Cryoelectron Tomography and Spectroscopic Imaging
DAPI	4′,6-Diamidino-2-Phenylindole
DP	Degree of Polymerisation
EA	Enzyme Assays
EBPR	Enhanced Biological Phosphorus Removal
EM	Electron Microscopy
EM-EDX	Electron Microscopy—Energy-dispersive X-ray
ESI-MS	Electrospray Ionisation Mass Spectrometry
EXT	Extraction procedures
FACS	Fluorescence-Activated Cell Sorting
FC	Flow Cytometry
FESEM	Field-Emission Scanning Electron Microscopy
FISH	Fluorescence in Situ Hybridization
GAO	Glycogen Accumulating Organism
ICP-AES	Inductively Coupled Plasma—Atomic Emission Spectrometry
LFM	Light and Epifluorescence Microscopy
MAR	Micro-autoradiography
MS	Mass Spectrometry
MT	Megaton
NMRS	Nuclear Magnetic Resonance Spectroscopy
OMICS	“Omics” techniques
P	Phosphate
PA	Proteic Affinity
PAGE	Polyacrylamide Gel Electrophoresis
PAO	Phosphate Accumulating Organism
PHA	Polyhydroxyalkanoate
Poly-P	Polyphosphate
PPBD	Polyphosphate Binding Domain
PPK	Polyphosphate kinase
PPX	Exopolyphosphatase
RAM	Raman spectromicroscopy
SEM	Scanning Electron Microscopy
STEM	Scanning Transmission Electron Microscopy
TCA	Tricarboxylic acid
Tg	Teragram
WWTP	Wastewater Treatment Plant
X-RAY	X-ray analysis techniques