See hamadryad in American Heritage Dictionary 4
noun pl. ham·a·dry·ads or ham·a·dry·a·des (-ə-dēzˌ)
Origin:
Origin: Middle English amadriad
Origin: , from Latin Hamadryas, Hamadryad-
Origin: , from Greek Hamadruas
Origin: : hama, together with; see sem-1 in Indo-European roots
Origin: + Druas, dryad (from drūs, oak; see deru- in Indo-European roots)
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