TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
POROMETRO [1 record]
Record 1 - internal organization data 2004-05-17
Record 1, English
Record 1, Subject field(s)
- Scientific Research Equipment
- Scientific Measurements and Analyses
- Plant and Crop Production
- Horticulture
Record 1, Main entry term, English
- porometer
1, record 1, English, porometer
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- diffusion porometer 2, record 1, English, diffusion%20porometer
correct
- leaf diffusion porometer 3, record 1, English, leaf%20diffusion%20porometer
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
Porometers were used ... to measure the stomatal conductance of 19 species of eucalypts ... Transpiration rates were calculated for each species from the Combination equation (Equation (0.1] for days on which stomatal conductance was measured. 4, record 1, English, - porometer
Record number: 1, Textual support number: 2 CONT
Knowing plant water status is useful, but to appreciate how the plant responds to drought we should also monitor some process within the plant. Given that most water is lost from the plant when it opens stomatal pores to photosynthesize, we might hypothesise that stomatal opening is somehow correlated with plant water status. The degree of stomatal opening can be measured with a diffusion porometer. As the name implies, the diffusion porometer measures the rate at which water vapour diffuses out of the leaf, mainly through stomatal pores. The greater the number of these pores and the wider their apertures, the faster will be the rate of water vapour diffusion for given conditions. By measuring this rate of diffusion and knowing the conditions which are driving it, we can calculate stomatal resistance to diffusion of water vapour (or its reciprocal, stomatal conductance). 2, record 1, English, - porometer
Record number: 1, Textual support number: 3 CONT
Stomatal resistance of selected species of the grass used to estimate the total canopy resistance were measured independently using a leaf diffusion porometer. 3, record 1, English, - porometer
Record 1, French
Record 1, Domaine(s)
- Matériel et équipement (Recherche scientifique)
- Mesures et analyse (Sciences)
- Cultures (Agriculture)
- Horticulture
Record 1, Main entry term, French
- poromètre
1, record 1, French, porom%C3%A8tre
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Appareil de mesure de la résistance des feuilles au transfert de vapeur d'eau. 2, record 1, French, - porom%C3%A8tre
Record number: 1, Textual support number: 1 OBS
Cette résistance est sous la dépendance de l'état d'ouverture des stomates, qui règle la transpiration, mais aussi les échanges gazeux (gaz carbonique oxygène) dont dépendent la photosynthèse et la respiration. 2, record 1, French, - porom%C3%A8tre
Record number: 1, Textual support number: 1 CONT
Tout déficit de saturation en vapeur d'eau existant dans l'atmosphère entourant une plante entraîne l'évaporation continue de l'eau (transpiration). Cette transpiration crée un appel d'eau continu dans le végétal. [...] On peut [...] déterminer la quantité d'eau rejetée dans l'atmosphère à l'aide d'un poromètre; en effet la phase ultime de la transpiration correspond à l'émission (diffusion), à travers les ouvertures des stomates, de la vapeur d'eau dans une atmosphère non saturée. Ce processus physique varie avec l'humidité relative de l'air, la température et l'agitation de l'atmosphère (vitesse du vent). 3, record 1, French, - porom%C3%A8tre
Record number: 1, Textual support number: 2 CONT
[...] des scientifiques de l'Université de Bâle ont démontré qu'une concentration accrue de CO2 réduit les orifices par lesquels respirent les feuilles. Cela accroît l'évaporation et, par conséquent, augmente l'écoulement des eaux : lors de pluies, le risque d'inondations s'accroît. En revanche, les plantes disposent plus longtemps d'eau en périodes sèches. [...] Depuis leur nacelle, les scientifiques mesurent à l'aide d'un poromètre la taille des pores des feuilles. 4, record 1, French, - porom%C3%A8tre
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Material y equipo (Investigación científica)
- Medición y análisis (Ciencias)
- Producción vegetal
- Horticultura
Record 1, Main entry term, Spanish
- porómetro
1, record 1, Spanish, por%C3%B3metro
correct, masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
Aparato para controlar el movimiento de los gases en su entrada y salida de las hojas. 2, record 1, Spanish, - por%C3%B3metro
Copyright notice for the TERMIUM Plus® data bank
© Public Services and Procurement Canada, 2025
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
A product of the Translation Bureau
Features
Language Portal of Canada

Access a collection of Canadian resources on all aspects of English and French, including quizzes.
Writing tools

The Language Portal’s writing tools have a new look! Easy to consult, they give you access to a wealth of information that will help you write better in English and French.
Glossaries and vocabularies

Access Translation Bureau glossaries and vocabularies.
- Date Modified: