eratosthenes
- n Greek mathematician and astronomer who estimated the circumference of the earth and the distances to the Moon and sun (276-194 BC)
erb's palsy
- n paralysis of the arm resulting from injury to the brachial plexus (usually during childbirth)
erb-duchenne paralysis
- n paralysis of the arm resulting from injury to the brachial plexus (usually during childbirth)
erbium
- n a trivalent metallic element of the rare earth group; occurs with yttrium
erebus
- n (Greek mythology) Greek god of darkness who dwelt in the underworld; son of Chaos; brother of Nox; father of Aether and Day
erechtites hieracifolia
- n an American weedy plant with small white or greenish flowers
erect bugle
- n upright rhizomatous perennial with bright blue flowers; southern Europe