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Adj.1.keel-shaped - shaped in the form of the keel of a boat
formed - having or given a form or shape
References in periodicals archive ?
Epiproct slender in the dorsal view; narrowed to the apex; dorsal sclerite mostly membranous, concaving at tip, and with a notch near apex; lateral arms slender, sclerotized, extending ventrally forming trapezoi dal sclerite near the tip; ventral sclerite forming a keel-shaped ridge, bearing many black spines ventrally (Fig.
Wind had scoured long gouges out of the bedrock, leaving the keel-shaped ridges behind.
The team studied gigantic keel-shaped ridges of rock called yardangs in the Qaidam Basin in Central Asia.