Underflow

/ˈʌn-dər-ˌfloʊ/

noun — “when numbers shrink so far they slip between the cracks of representation.”

Underflow is a condition in computing where a numeric value becomes too small to be represented accurately within a given format. It most commonly appears in floating-point systems, particularly those defined by IEEE 754, where numbers are stored using a finite number of bits for both magnitude and precision.