The Collaborative International Dictionary of English v.0.48:
Araneae \Araneae\ n. an order of arthropods constituting the spiders. Syn: order Araneae, Araneida, order Araneida. [WordNet 1.5] AraneidaWordNet (r) 3.0 (2006):
Araneae n 1: spiders [syn: Araneae, order Araneae, Araneida, order Araneida]