Late 17th century; earliest use found in George Keith (?1638–1716), Quaker schismatic and Church of England clergyman. From classical Latin quīnque five + -sect, after quinquesection.
Definition of quinquesect in US English:
quinquesect
(also quinquisect)
verbˈkwɪŋkwɪsɛkt
Mathematics
with objectTo divide into five equal parts.
Origin
Late 17th century; earliest use found in George Keith (?1638–1716), Quaker schismatic and Church of England clergyman. From classical Latin quīnque five + -sect, after quinquesection.