Dictionary » A » Absorption




(general) The act or process of absorbing or assimilating.

(biology) The process of absorbing or assimilating substances into cells or across the tissues and organs through diffusion or osmosis, as in absorption of nutrients by the digestive system, or absorption of drugs into the bloodstream.

(physics) The act or process of retaining light energy without reflection or transmission upon passing through a medium, as in the absorption of light by atoms.

(chemistry) The process in which a substance permeates another, as in a liquid permeating, or absorbed by, a solid.

(psychology) Complete attention, engrossment or concentration to an object or activity.


Word origin: Latin absorptio, from absorbere.

Related forms: absorb (verb).
Related terms: absorption band, absorption cell, atomic absorption spectrophotometry, cutaneous absorption, external absorption, linear absorption coefficient, specific absorption coefficient.

Compare: adsorption.

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Re: Vitamin D absorption for different skin types

This seems to be an area that is just beginning to draw research interest. Darker skin evolved in high light-exposure populations to protect deeper skin layers from UV damage, but tones lightened in pops with lower exposure, to allow enough UV to reach the D-generating skin tissues. Dark-skinned peo...

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by Darby
Tue Jul 15, 2014 7:39 pm
Forum: Human Biology
Topic: Vitamin D absorption for different skin types
Replies: 1
Views: 747

Vitamin D absorption for different skin types

Earlier i was reading an article and which mentioned how people with lighter skin synthesise vitamin D from the sun more easily than people with darker skin tones. I tried to look into this but i couldn't find an answer so i thought somewhere like here would be a good place to start. So my question ...

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by Piggis
Tue Jul 08, 2014 10:29 pm
Forum: Human Biology
Topic: Vitamin D absorption for different skin types
Replies: 1
Views: 747

Multicellular prokaryote

... and outgrowths)and because of their small size, they have a high surface area which completely outnumbers the need for endomemebrane system as the absorption and transport of food molecules and others can take place much easily than in that of the eukaryotic plasma membrane. well, what do all of ...

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by Sumanth001
Sat Nov 30, 2013 5:08 pm
Forum: Microbiology
Topic: Multicellular prokaryote
Replies: 27
Views: 27975

Yeast Fermenetation on Different Sugars

look up their transport (absorption) and metabolism

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by JackBean
Fri Sep 13, 2013 1:53 pm
Forum: Microbiology
Topic: Yeast Fermenetation on Different Sugars
Replies: 1
Views: 1199

integumentary system

can somebody mention fat-soluble vitamins in regards to absorption through skin? thank you.

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by soufieno
Thu Jul 25, 2013 2:25 pm
Forum: Physiology
Topic: integumentary system
Replies: 0
Views: 1518
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