deepening

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deepening

[′dēp·ə·niŋ]
(meteorology)
A decrease in the central pressure of a pressure system on a constant-height chart, or an analogous decrease in height on a constant-pressure chart.

deepening

A further decrease in the central pressure of a pressure system. A depression is deepening if there is a further fall of pressure at its center. The term is normally used with low-pressure systems, although it could be used with a high-pressure system as well.