Definition of lysimeter in English:



  • An apparatus for measuring changes due to moisture loss, percolation, etc. undergone by a body of soil under controlled conditions.

    • ‘We do this with intact soil core lysimeters; I can send you information on that, too, if you'd like.’
    • ‘Plants grown in a field lysimeter on two soil types were subjected to progressive drought during vegetative growth.’
    • ‘We're in the process of shutting down our long term compost utilization project and we need to dismantle the lysimeters that are installed below the plow layer throughout the field.’
    • ‘Devices called lysimeters are sometimes inserted into the ground to collect subsurface water, called leachate.’
    • ‘Gravitational solutions were collected at the litter layer level by four sets of nine thin, tensionless lysimeters to limit the disturbance of the forest floor.’


Late 19th century: from Greek lusis ‘loosening’ + -meter.