Liable to be taken by a writ of extent.(adjective)
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Use "extendible" in a sentence
"Three extendible and retractable filigree fibreglass rods reduce the mass to be displaced, while allowing a maximum scope of movement of up to 90 degrees."
"Unless those two holes on either side have extendible foot rests?"
"[I wondered if the Web Quest development tools are extendible, and had a chance to ask Carolyn in one of the breaks - she was able to confirm that they were.]"