See Also: tackle 2, noun(dictionary)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
secular(dictionary)
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secular equilibrium(medicine)
tackle(1)(dictionary)

secular equilibrium (medicine) and tackle 2, noun (oh)


secular equilibrium (medicine)


secular equilibrium


A type of radioactive equilibrium in which the half-life of the precursor (parent) radioisotope is so much longer than that of the product (daughter) that the radioactivity of the daughter becomes equal to that of the parent with time.

Stable equilibrium, equilibrium in which, after every small perturbation, the original state will tend to be restored.

Transient equilibrium, a type of radioactive equilibrium in which the half-life of the parent radioisotope is longer than that of the daughter so that the ratio of activities of parent and daughter become constant as they decrease with time.

Unstable equilibrium, equilibrium in which the response to a small perturbation will tend to make the perturbation greater (e.g., a logged feedback process of zero order).


tackle 2, noun (oh)



2 n
[Date: 1200-1300; Origin: Probably from Middle Low German takel 'ship's equipment', from taken 'to seize']
[C] a) an attempt to take the ball from an opponent in a game such as Football
b) an attempt to stop an opponent by forcing them to the ground, especially in American Football or rugby
[C] a player in American Football who stops Other players by tackling them or preventing them from moving forward
[U] the equipment used in some Sports and activities, especially fishing
[U and C] ropes and pulleys (=wheels) used for lifting heavy things
[U] BrE informal a man's sexual organs