See Also: catalyst(medicine)
catalyst(encyclopedia)
Catalyst(health)
catalyst(dictionary)
catalyst(dictionary)
organic catalyst(medicine)
Raney catalyst(medicine)
Enzyme (natural catalyst)(health)
CATALYST RECRUITMENT Systems Limited(finance)
Divine Providence Health Center Avera Health(health)

Adaptation (health) and catalyst (oh)


Adaptation (health)


A change in the sensitivity to light of a photoreceptor or the visual system as a whole to match the average light intensity present.





catalyst (oh)



[Date: 1900-2000; Origin: catalysis, on the model of analyst]
technical a substance that makes a chemical reaction happen more quickly without being changed itself
something or someone that causes an important change or event to happen
catalyst for
::They hope his election will act as a catalyst for reform.
-- catalytic /7kAtl5ItIk/ adj