an instrument for measuring the amount of water that a plant loses through transpiration, consisting of a sealed vessel of water with a cutting inserted in such a way that moisture can escape only through absorption and transpiration.
Origin of potometer
1880–85; < Greek potó(n) drink + -meter
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
an apparatus that measures the rate of water uptake by a plant or plant part
Word Origin for potometer
from Latin pōtāre to drink + -meter