Definition of thecal in US English:



  • See theca

    • ‘These can all narrow the thecal sac, but the location and imaging features of the process in this case are highly suggestive of a disk herniation.’
    • ‘Magnetic resonance imaging of the pelvis showed a large sacral mass that replaced the sacrum and compressed the thecal sac, extending anteriorly into the pelvic cavity, occupying a major portion of it.’
    • ‘It is useful in distinguishing epidural abscess from the adjacent compressed thecal sac and other potential compressive lesions, such as a herniated disc.’
    • ‘Seawater is pumped through these canals and gas exchange takes place within the thecal interior.’
    • ‘It clearly has plates that can reasonably be interpreted as thecal.’