Deepening

Verb

1. Present participle of deepen

Full definition of deepening

Noun

1. The act of becoming deeper.
• 1972, H. H. Lamb, Climate: Present, Past and Future (volume 1, page 408)Further examples of the same effect could be seen in sudden deepenings of depressions over the warmer than normal eastern Atlantic in the 1968-9 winter: the consequence was interruptions of the cold weather prevailing in Britain ...