HYPERBOREAN
Source: 566, 567
hyperborean. Hyperborean, a. northern, very cold
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Hy′per‐bo″re‐an (?), a. [[L. hyperboreus, Gr. �; υπἕρ over, beyond + �. See Boreas.]] 1. 1. (Greek Myth.) Of or pertaining to the region beyond the North wind, or to its inhabitants.
2. 2. Northern; belonging to, or inhabiting, a region in very far north; most northern; hence, very cold; fright, as, a hyperborean coast or atmosphere.
The hyperborean or frozen sea. C. Butler (1633).