noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Abbreviation of non-black hole (any theoretical alternative to black holes). abbreviation, alt-of
2. 2
   Initialism of number of black holes (“a count of black holes withing a given region (such as a galaxy)”). abbreviation, alt-of, initialism, numeral

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.