Plural of crux; the most important or difficult points, or representations of crosses.
From Latin 'crux' meaning cross. The plural 'cruxes' (alongside the Latin plural 'cruces') reflects the word's Latin origin while using English pluralization rules.
In astronomy, 'Crux' is the Southern Cross constellation, and astronomers still use 'cruxes' when discussing multiple crucial reference points, keeping Latin terminology alive in science.
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