'araneidal' originates from New Latin/Modern scientific usage, ultimately from Latin 'aranea', where 'aranea' meant 'spider'.

'araneidal' developed from the New Latin family name 'Araneidae' (used for orb-weaver spiders), derived from Latin 'aranea' and earlier Greek 'aráne', and was adapted into English as the adjective 'araneidal'.

Initially the root referred simply to 'spider'; over time derivatives came to mean 'relating to spiders' or 'spiderlike', which is the current sense of 'araneidal'.