crenellation
noun
cren·el·la·tion ˌkre-nə-ˈlā-shən 
variants or less commonly crenelation
1
: battlement
2
: any of the embrasures alternating with merlons in a battlement see battlement illustration
Example Sentences
Recent Examples on the Web Each receptor, ingenious in its design, recognized some characteristic microbial or viral signature—a kink in a virus’s RNA, a crenellation in a microbial cell wall. 
Dhruv Khullar, The New Yorker, 11 Aug. 2021 Each receptor, ingenious in its design, recognized some characteristic microbial or viral signature—a kink in a virus’s RNA, a crenellation in a microbial cell wall. Dhruv Khullar, The New Yorker, 11 Aug. 2021 Each receptor, ingenious in its design, recognized some characteristic microbial or viral signature—a kink in a virus’s RNA, a crenellation in a microbial cell wall. Dhruv Khullar, The New Yorker, 11 Aug. 2021 Each receptor, ingenious in its design, recognized some characteristic microbial or viral signature—a kink in a virus’s RNA, a crenellation in a microbial cell wall. Dhruv Khullar, The New Yorker, 11 Aug. 2021 Each receptor, ingenious in its design, recognized some characteristic microbial or viral signature—a kink in a virus’s RNA, a crenellation in a microbial cell wall. Dhruv Khullar, The New Yorker, 11 Aug. 2021 Each receptor, ingenious in its design, recognized some characteristic microbial or viral signature—a kink in a virus’s RNA, a crenellation in a microbial cell wall. Dhruv Khullar, The New Yorker, 11 Aug. 2021 Each receptor, ingenious in its design, recognized some characteristic microbial or viral signature—a kink in a virus’s RNA, a crenellation in a microbial cell wall. Dhruv Khullar, The New Yorker, 11 Aug. 2021 Each receptor, ingenious in its design, recognized some characteristic microbial or viral signature—a kink in a virus’s RNA, a crenellation in a microbial cell wall. Dhruv Khullar, The New Yorker, 11 Aug. 2021 See More
Dhruv Khullar, The New Yorker, 11 Aug. 2021 Each receptor, ingenious in its design, recognized some characteristic microbial or viral signature—a kink in a virus’s RNA, a crenellation in a microbial cell wall. Dhruv Khullar, The New Yorker, 11 Aug. 2021 Each receptor, ingenious in its design, recognized some characteristic microbial or viral signature—a kink in a virus’s RNA, a crenellation in a microbial cell wall. Dhruv Khullar, The New Yorker, 11 Aug. 2021 Each receptor, ingenious in its design, recognized some characteristic microbial or viral signature—a kink in a virus’s RNA, a crenellation in a microbial cell wall. Dhruv Khullar, The New Yorker, 11 Aug. 2021 Each receptor, ingenious in its design, recognized some characteristic microbial or viral signature—a kink in a virus’s RNA, a crenellation in a microbial cell wall. Dhruv Khullar, The New Yorker, 11 Aug. 2021 Each receptor, ingenious in its design, recognized some characteristic microbial or viral signature—a kink in a virus’s RNA, a crenellation in a microbial cell wall. Dhruv Khullar, The New Yorker, 11 Aug. 2021 Each receptor, ingenious in its design, recognized some characteristic microbial or viral signature—a kink in a virus’s RNA, a crenellation in a microbial cell wall. Dhruv Khullar, The New Yorker, 11 Aug. 2021 Each receptor, ingenious in its design, recognized some characteristic microbial or viral signature—a kink in a virus’s RNA, a crenellation in a microbial cell wall. Dhruv Khullar, The New Yorker, 11 Aug. 2021 See More Word History
Etymology
crenellate "to furnish with crenellations" + -ation — more at crenellated
First Known Use
circa 1838, in the meaning defined at sense 2