Recent Examples on the WebHuman studies have found that baby boys who were exposed to higher phthalate levels during fetal development had shorter distances between their anuses and genitals — a measure linked to lower testosterone levels and semen quality later in life.New York Times, 17 Apr. 2020 Wombats have roundish anuses, just like the rest of us mammals. Jill Kiedaisch, Popular Mechanics, 20 Nov. 2018 Overall, then, evolution easily could have done a U-turn long ago and developed fancier folds around our anuses for rectal talking. Sam Kean, Slate Magazine, 24 July 2017 An estimated 80 million in the U.S. have HPV, which is usually cleared by the immune system but causes most cervical cancers and some cancers of the anus and throat. Todd Ackerman, Houston Chronicle, 28 Dec. 2017
Word History
Etymology
borrowed from Latin ānus "ring, anus," perhaps going back to an Indo-European base *h1eh2n-o-, whence also, with different suffixation, Old Irish áinne "ring," Armenian anur, genitive-dative anroy "ring, necklace, collar"