The key difference between contraction and constriction is that contraction is the reduction of size or shortening of muscles, while constriction is the act of tightening, narrowing or closure. … Both are involuntary processes, but contraction is sometimes voluntary.

What do you mean by constriction?

1a : to make narrow or draw together Smoking constricts blood vessels. b : compress, squeeze constrict a nerve These shoes are too small and they constrict my feet. 2 : to stultify, stop, or cause to falter : inhibit The expectation of violence constricts our lives.—

What is a constriction in medicine?

To constrict is to squeeze uncomfortably. … In medicine, certain conditions or medications can constrict openings such as airways or blood vessels, sometimes dangerously. The Latin root is constringere, “to bind together or tie tightly.”