exˈtendednessn. the quality or condition of being extended.
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the world > space > extension in space > [noun]
space1521
excourse?c1550
extendure1610
extendedness1674
expansion1690
extension1790
development1807
extensitya1834
1674 N. FairfaxTreat. Bulk & Selvedge 173 Neither is extendednes the measure of God's immensity.
1727 R. BradleyChomel's Dictionaire Oeconomique (Dublin ed.) (at cited word)Fever, A Redness in the Face..Strength, Quickness and Extendedness of the Pulse.