LENGTHINESS
lengthiness, prolongation, continuation, protraction
(noun) the consequence of being lengthened in duration
extension, lengthiness, prolongation
(noun) amount or degree or range to which something extends; “the wire has an extension of 50 feet”
Source: WordNet® 3.1
Etymology
Noun
lengthiness (countable and uncountable, plural lengthinesses)
The property of being lengthy, longness.
Synonyms
• durativeness, protractedness; see also lastingness
Source: Wiktionary
Length"i*ness, n.
Definition: The state or quality of being lengthy; prolixity.
Source: Webster’s Unabridged Dictionary 1913 Edition