PATENCY
obviousness, noticeability, noticeableness, patency
(noun) the property of being easy to see and understand
patency
(noun) the openness (lack of obstruction) of a bodily passage or duct
Source: WordNet® 3.1
Etymology
Noun
patency (plural patencies)
(medicine) The degree of openness of a tube, such as a blood vessel or catheter; the relative absence of blockage. Measured in percent.
(uncountable) Obviousness; clarity.
Source: Wiktionary
Pa"ten*cy, n. Etym: [See Patent.]
1. The condition of being open, enlarged, or spread.
2. The state of being patent or evident.
Source: Webster’s Unabridged Dictionary 1913 Edition