%EE	Percent entrapment efficiency
ANOVA	One-way analysis of variance
BBD	Box–Behnken design
CH	Chitosan
CH-NPs	Chitosan NPs
CMA	Critical material attributes
CPP	Critical process parameters
CQA	Critical quality attributes
DOE	Design of experiments
E.	Entamoeba
FFD	Fractional factorial design
GI	Gastrointestinal
ICH	International Council for Harmonization
Met	Metronidazole
MetNp	Met containing NPs
MetNp Cap	Eudragit coated capsule containing MetNp
MTP1	Metal tolerance proteins-1
NPs	Nanoparticles
PNP	Purine nucleoside phosphorylase
PS	Particle size
QbD	Quality by design
QTPP	Quality target product profile
R2adj	Adjusted coefficient of determination
RDC	Residual drug content
RSM	Response surface methodology
Sc	Surface area of the uncoated capsule
SCF	Simulated colonic fluid
SGF	Simulated GI fluid
SGIF	Simulated gastric and intestinal fluid
SIF	Simulated intestinal fluid
SOD	Superoxide dismutase
TPP	Tripolyphosphate
Trx	Thioredoxin
TrxR	Thioredoxin reductase
ρo	Bulk density
ρt	Tapped density
Wc	Weight of uncoated capsule
Wec	Weight of enteric-coated capsule