bifacial

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bifacial

[bī′fā·shəl]
(botany)
Of a leaf, having dissimilar tissues on the upper and lower surfaces.
(design engineering)
Of a tool, having both sides alike.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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References in periodicals archive ?
They include two unidirectional rhyolite core fragments, a single completely exhausted multidirectional rhyolite core, a chert bipolar split pebble, a bifacially worked chert core, and a quartz-crystal core fragment.
The flake is reduced by direct percussion, usually bifacially applied;
The bifacially pressure flaked 'Kimberley point' is probably the most easily recognised formal stone artefact type from Aboriginal Australia, although ironically, this 'stone' artefact is most widely known as a flaked bottle glass artefact, as it was in this form that it was widely traded and collected in colonial Australia and elsewhere.
While there has been disagreement about the accuracy of these distributional maps, there is general acknowledgment that bifacially flaked stone points are restricted to northern Australia, and backed artefacts are generally found only in the south and east.
Some bifacially worked pieces seem to be of Dene or Palaeo-Eskimo origin, though some of this material, particularly large lanceolate bifaces, occurs at former Harvaqtuurmiut camps, where it may have been culturally redeposited (Tunnuq in Mannik, 1998:239).
Sixteen bifacially flaked chert cobbles were recovered from the Camooweal project area (Moore 2003c) (Figure 8).