Definition of lobe in English:



  • 1A roundish and flattish projecting or hanging part of something, typically one of two or more such parts divided by a fissure.

    ‘the leaf has a broad central lobe’
    See also earlobe
    ‘he pinched the lobe of his right ear’
    • ‘In mice, for example, the heart is on the left side, the right lung has more lobes than the left, the stomach and spleen lie to the left, and the liver has a single left lobe.’
    • ‘At the level of the neck of the bladder, it enters the right lobe of the liver.’
    • ‘The sturgeon tail behaves mechanically as an extremely flexible sheet with flexible dorsal and ventral lobes following the central tail region.’
    • ‘In the image shown in Figure 5, a triangular marker arrangement has been used on both the dorsal and ventral lobes of the tail.’
    • ‘Lung transplantations may involve two lungs, a single lung, or a lobe of a lung (the lungs are divided into lobes, three in the right lung and two on the left).’
    • ‘Funnily enough, I don't mind my own voice, it's just seeing all these bits that stick out, like noses, or big lobes on my ears… or chins.’
    • ‘The heart-lung block was removed, and the transplanted left lung and native right lung were divided into three lobes on each side.’
    • ‘The upper portion of the ascending colon lies behind the right lobe of the liver and in front of the anterior surface of the right kidney.’
    • ‘Multiple diffuse, single, and confluent nodules were present in all lung fields and liver lobes.’
    • ‘It's divided into lobes: a large right lobe and smaller left lobe that tapers toward a tip.’
    • ‘In each case, microscopic examination of various lung tissue specimens from all lobes of the lung was performed.’
    • ‘At right is another distinctive Newfoundland form - a disc-shaped fossil divided into irregular lobes.’
    • ‘It is characterized by a deep blue-green back, silvery sides and a white belly with black irregular spots on the back, dorsal fin and both lobes of the tail.’
    • ‘This finding suggests a direct pressor effect in patients with normal function of the posterior lobe of the pituitary gland.’
    • ‘Examination of other organs, including the brain, showed only old scarring of the middle lobe of the right lung.’
    • ‘In these the fins have lost their lobes, and one lung has been lost and the other converted to a swim bladder.’
    • ‘Its two horn-like projections, normally hanging down like lobes, were repeatedly folded in order to funnel food into its mouth.’
    • ‘With their long, slim bodies, they can be recognised easily by the large white tip on their first dorsal fin and the upper lobe of the tail.’
    • ‘What effect does this asymmetrical function of the dorsal and ventral tail lobes have on patterns of water flow in the wake?’
    • ‘The enlarging lobes of the prostate create a compressive obstruction of the urethra, resulting in decreased force and caliber of the urinary stream.’
    1. 1.1 Each of the parts of the cerebrum of the brain.
      • ‘A TMS coil was held over the visual processing areas in the right occipital-parietal lobes.’
      • ‘Behind the ethmoid spine is a smooth surface slightly raised in the midline, and grooved on either side for the olfactory lobes of the brain.’
      • ‘The rearmost of the four lobes is the occipital lobe, but there is no sulcus to define its limit on the lateral surface.’
      • ‘The temporal lobe is perhaps one of the most complex structures in the entire brain, it's certainly the most heterogenous lobe in the brain.’
      • ‘But they said, they told us looking at his CAT scan that both lobes of his brain had been severed.’
      • ‘A primary function of the frontal and prefrontal lobes is to inhibit responses.’
      • ‘The sulci are considerably narrower than the lobes.’
      • ‘This reduction in relative size would have concomitantly influenced the geometry of the relationship between the ocular lobes and the frontal lobe.’
      • ‘The inside of the fossil's skull bears an imprint of brain lobes that correspond to modern brain regions dedicated to interpreting sight and smell.’
      • ‘The prefrontal lobe is known to be involved in pragmatic language processes and complex social cognition.’
      • ‘It associates these categories with particular parts of the brain - regions, lobes, and areas.’
      • ‘Both twins had computer chips surgically implanted in the lobes of their brain, and a tiny computer chip stuck out just where the head met the neck.’
      • ‘What I've hopefully done is lit a spark in your brains that'll burn a tunnel from your prefrontal lobes to your medulla oblongata.’
      • ‘Certain upper lobes within the brain serve as controls for memory and learning.’
      • ‘In the course of his comparative studies of the mammalian brain, Broca identified the limbic lobe.’
      • ‘I've been told that dyslexics have less connections between the two lobes of the brain, instead of too many as with epileptics.’
      • ‘I might as well sell a lobe of my brain, or a chamber of my heart.’
      • ‘The division into frontal and posterior lobes of the brain was based on the functional specialisation of these lobes.’
      • ‘The results were used with a formula to measure a brain region called the medial-temporal lobe.’
      • ‘He had a basal skull fracture, lacerations to his scalp, facial abrasions and contusions to both frontal cerebral lobes.’


Late Middle English: via late Latin from Greek lobos ‘lobe, pod’.