0 a change, usually a slight change, in the appearance, character, or structure of something: --
The landscape has undergone considerable alteration.
She's getting some alterations done to her dress.
Several police officers are being questioned about the alteration of the documents.
1 a change in the appearance, character, or structure of something: --
Given the extensive interconnections between the amygdala and orbitofrontal regions one might also expect to see alterations in the ventral frontal regions as well.
Parasites were observed under a dissecting microscope and alterations in their behaviour noted over time.
Parasite-induced alterations in both appearance and behaviour concur to render infected gammarids more vulnerable to predation, thus promoting parasite transmission.
Such alterations would not affect the nature of second-best pension schemes in a qualitative sense, however.
Broadly speaking these were alterations in the brain and in the social environment of the child.
As a consequence, viral populations are heterogeneous and dynamic structures composed by ensembles of different genomes evolving in response to environmental alterations.
The next phase of our work focuses on exploring the alterations in physiological mechanisms that might allow for growth of eukaryotic microbes at acid extremes.
Living organisms in gravity environments deviating from 1-g show significant physiological alterations, however the corresponding cellular responses are still poorly understood.
