Both Uses of
frontier
in
Brave New World
- Ten minutes later they were crossing the frontier that separated civilization from savagery.
p. 105..1 (definition 1) *frontier = boundary
- …against this instrumental background, a much more than human voice began to warble; now throaty, now from the head, now hollow as a flute, now charged with yearning harmonics, it effortlessly passed from Gaspard's Forster's low record on the very frontiers of musical tone to a trilled bat-note high above the highest C to which (in 1770, at the Ducal opera of Parma, and to the astonishment of Mozart) Lucrezia Ajugari, alone of all the singers in history, once piercingly gave utterance.
p. 167..5 (definition 2) *frontiers = most extreme limit
Definitions:
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(1) (frontier as in: the frontier of Tibet) an international boundary or a wilderness at the edge of a settled area
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(2) (frontier as in: the frontier of brain science) the most recent understandings and achievements in a changing field