daily variation
- noun
:
variación diaria
- If the radio hiss came from the stars, the daily variation and the four minutes advance were exactly what one would expect.
Examples
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So there's daily variations in the feet of pendulum clocks just because of the Earth's rotation with respect to the sun and the moon.
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For example, the extreme daily variations below peaking power hydroelectric dams have no natural analogue in freshwater systems and represent, in an evolutionary sense, an extremely harsh environment of frequent, unpredictable flow disturbance.
Academic text (1997) -
Scientists found that there are daily variations in atmospheric pressure.
Blog text (27) -
In addition to showing interannual variation, average streamflow rates can show considerable daily variation during the summer, depending on insolation and air temperature.
Academic text (1999) -
For injection well samples, only CBOD 5 concentrations showed significant daily variations, and Thursday's samples were significantly higher than Tuesday's.
Academic text (2006) -
Certified reference material GBW 07601 was used as the QC sample; we used a large preparation (2 g/L) to monitor daily variation.
Academic text (2012) -
Scientists found that there are daily variations in atmospheric pressure.
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This reflects the normal daily variations of transcription activity in these genes.
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It is vital that you take your temperature accurately to be able to document the daily variation.
Surface Forms
Morphology
The meaning 'fluctuation from one day to the next' is directly and transparently derivable from combining 'daily' (occurring each day) with 'variation' (a change or fluctuation). This adjectival + noun composition is regular and cross-linguistically common, so a B1 learner who knows both words will readily infer the MWE's meaning.
Etymology
Daily variation shows a simple picture: daily means every day and variation means a change, like a line on a chart that goes up and down each day. So, the phrase refers to the 'change from one day to the next'.
