'amaranthaceae' originates from the Greek word 'amaranthos,' where 'a-' meant 'not' and 'maranthos' meant 'fading,' referring to the everlasting nature of the flowers.

'amaranthos' transformed into the Latin word 'amaranthus,' and eventually became the modern English word 'amaranthaceae' through scientific classification.

Initially, it referred to 'unfading flowers,' but over time it evolved into its current meaning of 'a family of flowering plants.'