Definition of coarctate in English:


Pronunciation /kōˈärkˌtāt/ /koʊˈɑrkˌteɪt/


  • 1Medicine
    Pressed close together; contracted; confined.

    ‘As compared to the ascending aorta, 30-50% narrowing was seen in the coarctate segment in 3 cases.’
    • ‘Formally, the epoxidation of alkenes with peracids can also be considered a coarctate reaction.’
    • ‘The ring opening is an eight-electron, Möbius, conrotatory process, not the six-electron, Huckel process described by Herges in his original work describing coarctate orbital topology.’
    • ‘The wild perennial grass species Porteresia coarctate Tateoka formerly O. coarctata Roxb. is considered as a potential source of genes for salinity tolerance.’
    1. 1.1Entomology (of the pupa of certain flies) formed within and remaining concealed by the larval cuticle or puparium.
      ‘The coarctate or pseudopupal stages are those in which hibernation or diapause occurs most frequently.’
      • ‘The coarctate is immobile and strongly sclerotized, and it has reduced mouthparts, legs, and musculature.’
      • ‘A pupa covered by the hardened 3rd larval skin is known as a coarctate pupa..’
      • ‘The pupa is typically coarctate, or ‘bulletlike’ and is reddish brown with an average length of 5.2 mm.’
      • ‘Since the pupal case is formed by the larval skin, the pupa within is said to be coarctate.’


Late Middle English from Latin coarctatus, past participle of coarctare ‘press or draw together’.