3CLpro	3-chymotrypsin-like protease
ACE2	angiotensin-converting enzyme 2
AOF	accessory ORF family
APN	aminopeptidase N
CCoV	canine coronavirus
CDC	Centers for Disease Control and Prevention
CoV	coronavirus
COVID-19	coronavirus disease 2019
DPP4	dipeptidyl peptidase 4
FCoV	feline coronavirus
FCS	furin cleavage site
FIPV	feline infectious peritonitis virus
GARD	genetic algorithm for recombination detection
GISAID	Global Initiative on Sharing All Influenza Data
HEL	NSP 13 C-terminal nucleoside triphosphate-binding/helicase motif
HIV	human immunodeficiency virus
IBV	infectious bronchitis virus
mABs	monoclonal antibodies
MERS	Middle East respiratory syndrome
MHV	murine hepatitis virus
N	nucleocapsid
NiRAN	nidovirus RdRp-associated nucleotidyl transferase domain
NSP	non-structural peptide
nt	nucleotide
ORF	open reading frame
PDCoV	porcine delta coronavirus
PEDV	porcine epidemic diarrhea virus
RBD	receptor-binding domain
RBM	receptor-binding motif within the RBD of spike
RDP4	recombination detection program 4
RdRp	RNA-dependent RNA polymerase
SADS	swine acute diarrhea syndrome
SARS-CoV-2	severe acute respiratory syndrome coronavirus-2
TGEV	transmissible gastroenteritis virus
TRS	transcriptional regulatory sequence
UTR	untranslated region
VoC	variant of concern
WHO	World Health Organization
ZBD	NSP 13 N-terminal cysteine-rich zinc-binding domain.