معنی کلمه aberration

a change from what is typical or usual, esp. a temporary change:
The drop in our school’s test scores was dismissed as an aberration.

More examples:

To date aberrations in a number of signalling pathways have provided potential mechanisms for antioestrogen resistance.
From Cambridge English Corpus
This simulation shows that the amplitude of the modulations dues to the static aberrations are independent of the correction.
From Cambridge English Corpus
The highest number of assessments was found in the case of screening for genetic aberrations and severe congenital malformations.
From Cambridge English Corpus
This result suggested that chromatic aberration might account, in part, for color assimilation over small, but not large, enclosed areas.
From Cambridge English Corpus
These exceptional quality crystals introduce negligible aberration into the frequency doubled beam.
From Cambridge English Corpus
Indeed, such changes might be as important as the more widely studied genetic mutations and chromosomal aberrations that characterise tumour cells.
From Cambridge English Corpus
To date 24 chromosomal loci have been mapped, 11 chromosomal aberrations verified and 17 of the genes identified.
From Cambridge English Corpus
When the distribution of the scientists' citations on sources was analyzed, astonishing aberrations were observed.
From Cambridge English Corpus
Lenses for correcting chromatic aberration of the eye.
From Cambridge English Corpus
By optimizing the extraction diode geometry and reducing the beam current, the spherical aberration was later improved and therefore the beam profile became more uniform.
From Cambridge English Corpus
The only requirement on pump beam aberrations is that the pump beam divergence must be less than the phase matching angular tolerance.
From Cambridge English Corpus
Chiasmatic recombination thus might have been the mechanism that freed organisms from such aberrations by making large chromosome numbers unnecessary.
From Cambridge English Corpus
Therefore, for a compensated optical design, both the diffraction of the grating and the dominant aberrations have to be corrected.
From Cambridge English Corpus
Moreover, the province's figure is not simply a recent aberration.
From Cambridge English Corpus
Good marriages are presented as just as much of an aberration in that they are portrayed as curiosities, as objects on display

a deviation from what is considered normal or right

irregularity

The last kiss had been a mistake, an aberration.
A genetic aberration.
A mental aberration.

She is normally calm and level headed , so this outburst is an aberration .

We considered our defeat to be an aberration , since we'd easily beaten this team last season .

The aberration is here unsymmetrical , the wave being in advance of its proper place in one half of the aperture , but behind in the other half .

The indirect method is based upon the observed constant of aberration or the displacement of the stars due to the earth's motion .

She is normally calm and level headed, so this outburst is an aberration.

We considered our defeat to be an aberration, since we'd easily beaten this team last season.

The use of mirrors instead of lenses was another way to avoid chromatic aberration.

The problem with many low priced cameras, is color aberration in the final image.