'animalia' originates from Latin, specifically the word 'animalia,' the plural of 'animal,' where 'anima' meant 'breath, soul, life.'

'Animalia' was adopted in New Latin scientific taxonomy (notably by Linnaeus) and eventually became the modern English name for the animal kingdom 'Animalia'.

Initially, it meant 'animals' (plural) in Latin, but over time it evolved into its current use as the proper name of the biological kingdom that includes all animals.