'acrothoracica' originates from Greek, specifically the word 'akron' meaning 'top' or 'extreme' and 'thorax' meaning 'chest'.

'acrothoracica' was derived from the Greek words 'akron' and 'thorax', and eventually became the scientific term used in modern taxonomy.

Initially, it referred to the 'extreme chest' of certain organisms, but over time it evolved into its current meaning of a subclass of burrowing barnacles.