TENUITY
feebleness, tenuity
(noun) the quality of lacking intensity or substance; “a shrill yet sweet tenuity of voice”- Nathaniel Hawthorne
rarity, tenuity, low density
(noun) a rarified quality; “the tenuity of the upper atmosphere”
thinness, tenuity, slenderness
(noun) relatively small dimension through an object as opposed to its length or width; “the tenuity of a hair”; “the thinness of a rope”
Source: WordNet® 3.1
Etymology
Noun
tenuity (usually uncountable, plural tenuities)
Thinness, slenderness.
Meagreness, paucity.
Source: Wiktionary
Te*nu"i*ty, n. Etym: [L. tenuitas, from tenuis thin: cf. F. ténuité.
See Tenuous.]
1. The quality or state of being tenuous; thinness, applied to a
broad substance; slenderness, applied to anything that is long; as,
the tenuity of a leaf; the tenuity of a hair.
2. Rarily; rareness; thinness, as of a fluid; as, the tenuity of the
air; the tenuity of the blood. Bacon.
3. Poverty; indigence. [Obs.] Eikon Basilike.
4. Refinement; delicacy.
Source: Webster’s Unabridged Dictionary 1913 Edition