資料來源 : pyDict

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資料來源 : Webster's Revised Unabridged Dictionary (1913)

Protractile \Pro*tract"ile\, a.
   Capable of being protracted, or protruded; protrusile.

資料來源 : WordNet®

protractile
     adj : able to be extended; "protractile muscle" [syn: {protractible}]