an apparatus that measures the rate of water uptake by a plant or plant part
Word origin
from Latin pōtāre to drink + -meter
potometer in American English
(pəˈtɑmɪtər)
noun
Meteorology
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
Word origin
[1880–85; ‹ Gk potó(n) drink + -meter]This word is first recorded in the period 1880–85. Other words that entered Englishat around the same time include: automatism, highball, irredentist, rain check, regionalism-meter is a combining form meaning “measure,” used in the names of instruments measuringquantity, extent, degree, etc. Other words that use the affix -meter include: altimeter, chronometer, interferometer, nephelometer, thermometer