patency

Plural: patencies

Noun

• the openness (lack of obstruction) of a bodily passage or duct
• the property of being easy to see and understand
• The condition or state of being patent.
• The degree of openness (of a tube, such as a blood vessel or catheter); the relative absence of blockage or obstruction. Measured in percent.
• Obviousness; clarity.
• pl. -CIES the state of being obvious

Synonyms

noticeability, noticeableness, obviousness

Antonyms

atresia, impatency, imperforation, obstruction, occlusion