CIL	Carbamate Ionic Liquid
CO	Carbon monoxide
CO${}_2$	Carbon dioxide
CO${}_2$Hb	Carbamino-Haemoglobin
COPD	Chronic Obstructive Pulmonary Disease
CTAH	Cetyltrimethyl ammonium hydroxide
DLR	Dual Lifetime Referencing
DRS	Diffuse Reflectance Spectometry
FDA	Food and Drug Administration
FET	Field-Effect Transistor
FRET	Fluorescent Resonance Energy Transfer
H${}_2$O	Water
HHb	Deoxy-Haemoglobin
HPMC	Hydroxy propyl methylcellulose
HPTS	1-hydroxy-pyrene-3,6,8-trisulfonate
IFE	Inner Filter Effect
ISFET	Ion-Selective Field-Effect Transistor
LED	Light Emitting Diode
MEMS	Micro Electro-Mechanical Systems
MOSFET	Metal Oxyde Semiconductor Field-Effect Transistor
N${}_2$	Di-nitrogen
NDIR	Non Dispersive Infra-Red
O${}_2$	Di-oxygen
pv-aCO${}_2$	Carbon dioxide venous-to-arterial pressure difference
paCO${}_2$	Arterial carbon dioxide partial pressure
paO${}_2$	Arterial dioxygen partial pressure
pCO${}_2$	Carbon dioxide partial pressure
PEN	Polyethylene naphthalate
PET	Polyethylene terephthalate
petCO${}_2$	End-tidal carbon dioxide partial pressure
PPG	Photoplethysmography
PTFE	Polytetrafluoroethylene
tcpCO${}_2$	Transcutaneous carbon dioxide partial pressure
TMAH	Tetramethyl ammonium hydroxide
TPB	Tributyl phosphate