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 (prō-trăk′təl, -tīl′, prə-) also pro·tract·i·ble (-tə-bəl)
Capable of being protracted; extensible: protractile limbs and claws.

pro′trac·til′i·ty (prō′trăk-tĭl′ĭ-tē) n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.protractible - able to be extended; "protractile muscle"
extensible, extensile - capable of being protruded or stretched or opened out; "an extensile tongue"; "an extensible measuring rule"
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References in periodicals archive ?
It also said that the new camera phone will be compact and slimmer than the bulky predecessor, Galaxy S4 Zoom, which had protractible lens forming an awkward bump on the rear-side.
As the protractible encounter between the Arab Islamists and ruling classes in several Arab countries seems to have reached a deadlock, many Arabs have become keen to see the manner in which the AKP might reshape and/or be reshaped by the republic.
He briefly duetted with support star Sheryl Crow on Honky Tonk Women, and there was an exhilarating interlude when a huge protractible bridge deposited the band on a platform in the middle of the crowd where they recreated the cramped confines of their earliest arenas.