T2DM	Type 2 diabetes mellitus
IoT	Internet of Things
IDF	International Diabetes Foundation
WHO	World Health Organization
VOC	Volatile Organic Compounds
MOS	Metal-Oxide-Semiconductor
ML	Machine Learning
BGL	Blood glucose level
E-Nose	Electronic Nose
DiabeticSense	Non-invasive multi-sensor diabetes detection device
ADC	Analog-to-digital converter
LP	Liquefied petroleum
ppm	parts per million
mL	milli-Litre
abs	absolute
max	maximum
min	minimum
mean	mean or average
stdDev	standard deviation
avg	average
G-Boost	Gradient Boosting
DT	Decision Tree
KNNs	K-Nearest Neighbours
ENet	Elastic Net
SVMs	Support Vector Machines
XG-Boost	eXtreme Gradient Boosting
RF	Random Forest
AUC	Area Under the Curve
MeanAcc	Mean Accuracy
SHAPs	Shapley additive explanations
BP	Blood Pressure
SPO${}_2$	Oxygen level in blood
FFT	Fast Fourier Transform
SMOTE	Synthetic Minority Oversampling TEchnique
MSE	Mean Square Error
sqrt	Square root
T	Temperature
H	Humidity
°C	degree Celsius