Capable of being erected, set upright, or constructed; able to be raised into an upright position.
From the verb 'erect' (from Latin 'erigere') plus the suffix '-able.' The suffix indicates potential or capability, a productive pattern in English for creating adjectives.
Engineers love this word because it describes both a tent and a temporary bridge and a statue—anything that can be raised from a flat or lowered state into vertical alignment.
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