hyperpolarize

American  

[hahy-per-poh-luh-rahyz] / ˌhaɪ pərˈpoʊ ləˌraɪz /

especially British, hyperpolarise

verb (used with object)

hyperpolarized, hyperpolarizing

1. to increase the difference in electric potential across (a cell membrane).

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verb (used without object)

hyperpolarized, hyperpolarizing

1. to undergo such an increase.

Other Word Forms

• hyperpolarization noun

Etymology

Origin of hyperpolarize

First recorded in 1945–50; hyper- + polarize

Example Sentences

The opposing signals to the heart would both depolarize and hyperpolarize the heart cells that establish the rhythm of the heartbeat, likely causing arrhythmia.

From Textbooks • Jun. 19, 2013

Some bitter molecules depolarize gustatory cells, whereas others hyperpolarize gustatory cells.

From Textbooks • Jun. 19, 2013

If ACh is released onto those cells, it binds to a muscarinic receptor that causes the cells to hyperpolarize so that they cannot reach threshold as easily, and the heart rate slows.

From Textbooks • Jun. 19, 2013

The moving otolithic membrane, in turn, bends the sterocilia, causing some hair cells to depolarize as others hyperpolarize.

From Textbooks • Jun. 19, 2013