Capable of being nested (stacked or housed one inside the other).(adjective)
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Use "nestable" in a sentence
"Each storage container is also 'nestable', meaning they stack and nest within each other to save valuable space in your cabinet or refrigerator."
"They are nestable and when shipped the company can fit ten times the typical quantity on a forty foot truck."
"I have a mix of Pyrex and some other brand; they are “nestable” – biggest lid, biggest dish, next biggest lid inside that, next biggest dish – et cetera."