3-APDEMS	3-aminopropyl (diethoxy)methylsilane
AAc	Acrylic acid
ADIP	2,2′-azobis-[2-(1-3-dimethyl-4,5-dihydro-1H-imidazol-3-ium-2-yl)] propane triflate
AG-ALD	Alginate-aldehyde
AG-HYD	Alginate-hydrazone
APTES	3-aminopropyl)triethoxysilane
Arg-1	Arginase-1
BCN	Bicyclononyne
Ccl	Crosslinker concentration
CaCl2	Calcium Chloride
CANs	Covalent adaptable networks
CB	Cucurbituril
CB[8]	Cucurbit[8]uril
CD-Ad	Cyclodextrin–adamantane
CD44	Cluster of differentiation 44
CuBGs	Copper-doped bioglass
DAT	N,N′-diallyltartramide
DMAA	N,N-dimethylacrylamide
DN	Double network
ECM	Extracellular matrix
EDTA	Ethylenediaminetetraacetic acid
EGDMA	Ethylene glycol dimethacrylate
ELP	Elastin-like protein
f	Average functionality of the crosslinkers
G	Bulk shear modulus
G-TA	Gelatin-tyramine
G0	Initial shear modulus
GAG	Glycosaminoglycan
GB1	Immunoglobulin-binding domain B1 of protein G
Ge	Entanglement modulus
GelMA	Gelatin-methacrylate
G′	Storage modulus
G″	Loss modulus
G″/G′	Loss tangent
G∞	Rubbery plateau modulus
H2O2	Hydrogen peroxide
HA	Hyaluronic acid
HA-MA	Methacrylated hyaluronic acid
HA-SH	Thiolated hyaluronic acid
HA-SSPy	Pyridyl disulfide-functionalized hyaluronic acid
hMSCs	Human mesenchymal stem cells
HP67	Folding protein 67 domain
HRP	Horseradish peroxidase
IDO	Indoleamine 2,3-dioxygenase
IL10	Interleukin-10
IPN	Interpenetrating network
k	Rate at which crosslinks can rearrange
keq	Equilibrium constant
koff	Kinetics of bond breakage
kon	Kinetics of bond re-formation
Kir	Inwardly rectifying potassium channel
LAP	Lithium acylphosphinate
LBMs	Load-bearing modules
LX	Linear crosslinkers
M2	M2 macrophage phenotype
MA-GNPs	Methacrylated gelatin nanoparticles
MAPK	Mitogen-activated protein kinase
MB	N,N′-methylenebisacrylamide
MBAA	N,N′-methylenebis(acrylamide)
Mc	Molecular weight between crosslinkers
MMP	Matrix metalloproteinase
MPC	2-methacryloyloxyethyl phosphorylcholine
MSCs	Mesenchymal stem cells
MSNs	Mesoporous silica nanoparticles
n	Scaling exponent
NF-kB	Nuclear factor kappa-light-chain-enhancer of activated B cells
NMR	Nuclear magnetic resonance
NPCs	Neural progenitor cells
${\rho }_c$	Critical extent of reaction at the gel point
PAMAM	Poly(amidoamine)
PAMPS	Poly(2-acrylamido-2-methylpropanesulfonic acid)
PEG	Polyethylene glycol
PEG-2ALD	Linear polyethylene glycol-dialdehyde
PEG-4ALD	4-arm polyethylene glycol-aldehyde
PEG-VS	Polyethylene glycol-vinyl sulfone
PEG4AC	4-arm polyethylene glycol
PEGDA	Polyethylene glycol diacrylate
PEGDMA	Poly(ethylene glycol) dimethacrylate
PETRA	Pentaerythritol tetra-acrylate
PGSE	Pulsed gradient spin–echo
pH	Potential of hydrogen
pHEMA	Poly(2-hydroxymethyl methacrylate)
pNIPAM	Poly(N-isopropylacrylamide-co-acrylic acid)
PVA	Poly(vinyl alcohol)
RGD	Arginine-Glycine-Aspartic acid
SCX	Side-chain crosslinkers
SD	Standard deviation
SDC	Star diblock copolypeptides
SF	Silk fibroin
SF-G	Silk-gelatin
SF-PG	Silk-poly(guluronate)
SF-TA	Silk fibroin-tyramine
SH3	Src Homology 3 domain
SIF	Intestinal fluid
SilMA	Methacryloyl-modified silk fibroin
SPAAC	Strain-promoted azide-alkyne cycloaddition
SX	Star crosslinkers
t1/2	Half-stress relaxation time
tt	Terminal relaxation time
TA	Tyramine
TIP	Tax-interacting protein
TIP-1	Tax-interacting protein 1
TNF-α	Tumor necrosis factor alpha
Tr	Relaxation time
UPy	Ureido-pyrimidinone
UPyEA	Ureido-pyrimidinone ethyl acrylate
UV	Ultraviolet
VICs	Valve interstitial cells
α-SMA	α-smooth muscle actin
γ	Strain
ξ	Mesh size
ξc	Correlation blob
ξel	Elastic blob
ξg	Geometric blob
σ(t)	Resulting stress
τ	Relaxation time
φ	Polymer volume fraction
ω	Frecuency