v.

become stiff or stiffer

"He stiffened when he saw his boss enter the room"

make stiff or stiffer

restrict

"stiffen the regulations"

同義詞：tightentighten upconstrain

The dorsal involuting marginal zone stiffens anisotropically during its convergent extension in the gastrula of Xenopus laevis
One Water Molecule Stiffens a Protein
ROK-induced cross-link formation stiffens passive muscle: reversible strain-induced stress softening in rabbit detrusor.
Dexamethasone Stiffens Trabecular Meshwork, Trabecular Meshwork Cells, and Matrix.
Electron Microscopic Studies of the Interaction Between a Bacillus subtilis α/β-Type Small, Acid-Soluble Spore Protein with DNA: P...
Implantable mesh prosthesis and method for repairing muscle or tissue wall defects
High-speed electrically actuated elastomers with strain greater than 100%
Stretching DNA with optical tweezers
Hyperelastic modelling of arterial layers with distributed collagen fibre orientations.
The pathogenesis of idiopathic pulmonary fibrosis