Definition of septum in English:

septum

Pronunciation /ˈseptəm/ /ˈsɛptəm/

nounsepta

  • A partition separating two chambers, such as that between the nostrils or the chambers of the heart.

    ‘At this stage also, minor septa and shortened cardinal septum become easily identifiable.’
    • ‘The trachea is unbranched, and is formed by the division of the foregut by a longitudinal septum into two tubes - the trachea and the esophagus.’
    • ‘The ventricular septum and the atrioventricular and semilunar valves were unremarkable.’
    • ‘As in most species of balsaminoid Ericales, raphides are found in the septa of the locule wall.’
    • ‘This area includes the anterior end of the inferior turbinate, the adjacent septum and the caudal edge of the upper lateral cartilages.’

Origin

Mid 17th century from Latin septum, from sepire ‘enclose’, from sepes ‘hedge’.