Definition of coarctate in English:



Biology Anatomy
  • 1Pressed close together; contracted; compressed.

    • ‘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 is immobile and strongly sclerotized, and it has reduced mouthparts, legs, and musculature.’
      • ‘The pupa is typically coarctate, or ‘bulletlike’ and is reddish brown with an average length of 5.2 mm.’
      • ‘The coarctate or pseudopupal stages are those in which hibernation or diapause occurs most frequently.’
      • ‘Since the pupal case is formed by the larval skin, the pupa within is said to be coarctate.’
      • ‘A pupa covered by the hardened 3rd larval skin is known as a coarctate pupa..’


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