The Collaborative International Dictionary of English v.0.48:
Oceanid \Oceanid\ prop. n. (Greek mythology) A daughter of the Titans Oceanus and Tethys. Syn: sea nymph. [WordNet 1.5]WordNet (r) 3.0 (2006):
Oceanid n 1: (Greek mythology) sea nymph who was a daughter of Oceanus and Tethys