Definition of underflow in English:

underflow

Syllabification: un·der·flow
Pronunciation: /ˈəndərˌflō
 
/

noun

1An undercurrent.
1.1A horizontal flow of water through the ground, especially one underneath a riverbed.
2 Computing The generation of a number that is too small to be represented in the device meant to store it.
More example sentences
  • At each step of the algorithm, one should rescale constructed arrays to prevent numerical underflow.
  • Specifically, it looks for dynamic buffer underflows and detects memory reuse after it is freed.

Definition of underflow in:

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