What is another word for gill slit?
Pronunciation: [ɡˈɪl slˈɪt] (IPA) 
"Gill slit" is a term used to describe the openings on the sides of fish that allow them to breathe. However, there are many other words and phrases that can be used as synonyms for this anatomical feature. Some alternative terms include branchial opening, respiratory aperture, gill cleft, opercular aperture, and water-breathing hole. Each of these terms describes the same basic function of allowing fish to extract oxygen from water for respiration. While "gill slit" may be the most commonly used term, there are numerous other options available for those looking to add variety to their writing or conversation.
