potometern.

Brit.

/pə(ʊ)ˈtɒmᵻtə/,

/pɒˈtɒmᵻtə/, U.S.

/pəˈtɑmədər/

Origin: A borrowing from Greek, combined with an English element. Etymons: Greek ποτόν , -meter comb. form².

Etymology: < ancient Greek ποτόν drink (see potomania n.) + -meter comb. form².

An instrument for measuring the rate at which a plant absorbs water.

ΘΚΠ

the world > food and drink > farming > tools and implements > sowing and planting equipment > [noun] > instrument measuring water intake

potometer1884

1884 F. Darwin in Nature 1 May 7 An ingenious instrument..the Potometer. It is a modification of Sachs' apparatus for determining the amount of water which a cut branch absorbs in a given time.

1914 F. E. Fritsch & E. J. Salisbury Introd. Study Plants ix. 117 It is advisable to measure the rate of this process [sc. transpiration] and for this purpose an instrument known as a potometer is used.

1946 A. Nelson Princ. Agric. Bot. xi. 287 Potometers measure the amount of water taken in by the plant, and not necessarily the amount given off.

1994 Forest Ecol. & Managem. 63 169 Water uptake from the potometer was positively related to both the foliar mass plus the average number of resin canals in the needles of each tree.

This entry has been updated (OED Third Edition, December 2006; most recently modified version published online March 2022).

单词	potometer
释义	potometern. Brit. /pə(ʊ)ˈtɒmᵻtə/, /pɒˈtɒmᵻtə/, U.S. /pəˈtɑmədər/ Origin: A borrowing from Greek, combined with an English element. Etymons: Greek ποτόν , -meter comb. form². Etymology: < ancient Greek ποτόν drink (see potomania n.) + -meter comb. form². An instrument for measuring the rate at which a plant absorbs water. ΘΚΠ the world > food and drink > farming > tools and implements > sowing and planting equipment > [noun] > instrument measuring water intake potometer1884 1884 F. Darwin in Nature 1 May 7 An ingenious instrument..the Potometer. It is a modification of Sachs' apparatus for determining the amount of water which a cut branch absorbs in a given time. 1914 F. E. Fritsch & E. J. Salisbury Introd. Study Plants ix. 117 It is advisable to measure the rate of this process [sc. transpiration] and for this purpose an instrument known as a potometer is used. 1946 A. Nelson Princ. Agric. Bot. xi. 287 Potometers measure the amount of water taken in by the plant, and not necessarily the amount given off. 1994 Forest Ecol. & Managem. 63 169 Water uptake from the potometer was positively related to both the foliar mass plus the average number of resin canals in the needles of each tree. This entry has been updated (OED Third Edition, December 2006; most recently modified version published online March 2022). < n.1884
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