an agent that blocks a physiological function, such as the transport of an ion across an ion channel
blocker in American English
(ˈblɑkər)
noun
someone or something that blocks
; specif.,
a.
a drug or other substance that prevents certain biochemical reactions
calcium blocker
b.
an offensive football player who tries to prevent the defensive players from reaching the ball carrier
Examples of 'blocker' in a sentence
blocker
People must not stop beta blockers unless advised to do so by their doctor.
Times, Sunday Times (2012)
The study says more research is needed to determine why calcium channel blockers have this protective power.
Times, Sunday Times (2008)
The exercising muscles send out their own calcium entry channel blockers.
Pantano, James A. (MD) Living with Angina (1991)
It is also possible to unintentionally combine beta blockers with other drugs and this could be dangerous.
Martlew, Gillian & Silver, Shelley (ed) The Medicine Chest - your family's guide to prescription drugs (1988)
Thus enter the beta blockers.
Pantano, James A. (MD) Living with Angina (1991)
One approach that is showing some promise involves the use of "calcium channel blockers," which are drugs commonly used to treat heart disease.
Laszlo, John (MD) Understanding Cancer (1987)
In this particular condition, at least, the use of beta blockers is strongly supported.
Times, Sunday Times (2012)
Because I think beta blockers have so much to offer, most of my patients with angina are taking a drug from this class.
Pantano, James A. (MD) Living with Angina (1991)
All related terms of 'blocker'
alpha-blocker
any of a class of drugs that prevent the stimulation of alpha adrenoceptors, a type of receptor in the sympathetic nervous system, by adrenaline and noradrenaline and that therefore cause widening of blood vessels : used in the treatment of high blood pressure and prostatic hyperplasia
beta-blocker
A beta blocker is a drug which is used to treat people who have high blood pressure or heart problems .
calcium channel blocker
any drug that prevents the influx of calcium ions into cardiac and smooth muscle : used to treat high blood pressure and angina
angiotensin receptor blocker
any of a class of drugs that block the uptake of angiotensin : used in the treatment of high blood pressure
bed-blocking
the use of hospital beds by elderly patients who cannot leave hospital because they have no place in a residential care home