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ROOT DIAMETER [9 records]

Record 1 2013-05-01

English

Subject field(s)
  • Plant Biology
  • Botany
DEF

A root system in which both primary and lateral roots are finely divided and have approximately equal diameters, without evident thickening or an enlarged central root.

CONT

A fibrous root system is one in which the primary root ceases to elongate, leading to the development of numerous lateral roots... A fibrous root is one which remains small in diameter because of a lack of significant cambial activity.

Key term(s)
  • heartroot system

French

Domaine(s)
  • Biologie végétale
  • Botanique
DEF

[Système racinaire sans pivot] composé de nombreuses racines de même importance disposées en faisceau [et qui] possèdent une origine commune.

CONT

Les graminées possèdent le système fasciculé le plus dense, ce qui explique leur choix fréquent dans les expériences de phytoremédiation des hydrocarbures aromatiques polycycliques (HAP).

Spanish

Save record 1

Record 2 2006-11-07

English

Subject field(s)
  • Descriptive Geometry
  • Gears and Friction Wheels
DEF

The diameter of the root circle.

OBS

root diameter : term and definition standardized by ISO.

French

Domaine(s)
  • Géométrie descriptive
  • Engrenages et roues de friction
DEF

Diamètre du cercle de pied.

OBS

diamètre de pied : terme et définition normalisés par l'ISO.

Spanish

Save record 2

Record 3 2002-08-21

English

Subject field(s)
  • Descriptive Geometry
  • Gears and Friction Wheels
DEF

Half the difference between the pitch diameter and the root diameter.

OBS

Terminology of worm gear geometry.

OBS

working dedendum: term and definition standardized by ISO.

French

Domaine(s)
  • Géométrie descriptive
  • Engrenages et roues de friction
DEF

Demi-difference entre le diamètre de fonctionnement et le diamètre de pied.

OBS

Terminologie de la géométrie des engrenages à vis.

OBS

creux de fonctionnement : terme et définition normalisés par l'ISO.

Spanish

Save record 3

Record 4 2002-08-21

English

Subject field(s)
  • Descriptive Geometry
  • Gears and Friction Wheels
DEF

Half the difference between the reference diameter and the root diameter.

OBS

Terminology of worm gear geometry.

OBS

reference dedendum: term and definition standardized by ISO.

French

Domaine(s)
  • Géométrie descriptive
  • Engrenages et roues de friction
DEF

Demi-différence entre le diamètre de référence et le diamètre de pied.

OBS

Terminologie de la géométrie des engrenages à vis.

OBS

creux de référence : terme et définition normalisés par l'ISO.

Spanish

Save record 4

Record 5 1999-01-13

English

Subject field(s)
  • Metrology and Units of Measure
  • Machine-Tooling (Metallurgy)
  • Joining Elements (Mechanical Components)
DEF

The largest diameter of a screw thread, measured at the crest for an external(male) thread and at the root for an internal(female) thread.

OBS

nominal diameter: term standardized by ISO-5843-2, 1990, Aerospace Rivets.

French

Domaine(s)
  • Unités de mesure et métrologie
  • Usinage (Métallurgie)
  • Éléments d'assemblage (Composants mécaniques)
OBS

nominal : Se dit de la cote ordinairement employée pour indiquer la dimension du diamètre d'une vis, d'un arbre.

OBS

diamètre nominal : terme normalisé par l'ISO-5843-2, 1990, Rivets pour les constructions aérospatiales.

Spanish

Save record 5

Record 6 1998-01-22

English

Subject field(s)
  • Xylology (The Study of Wood)
  • Wood Sawing
DEF

Sharp increase in diameter of the butt end. According to the form of the butt end, root swelling is subdivided into round and veined.

OBS

root swelling; buttress: terms standardized by ISO.

French

Domaine(s)
  • Xylologie (Étude des bois)
  • Sciage du bois
DEF

Élargissement sensible de la section de la partie inférieure de la bille. Suivant la forme de la partie inférieure de la bille, on distingue le renflement tronconique et le renflement nervuré (contrefort).

OBS

renflement du pied; patte; empattement; contreforts : termes normalisés par l'ISO.

Spanish

Save record 6

Record 7 1994-05-16

English

Subject field(s)
  • Joining Elements (Mechanical Components)
  • Aeronautical Engineering and Maintenance
OBS

thread root diameter : term standardized by ISO.

French

Domaine(s)
  • Éléments d'assemblage (Composants mécaniques)
  • Aérotechnique et maintenance
OBS

diamètre à fond de filet : terme normalisé par l'ISO.

Spanish

Save record 7

Record 8 1987-12-30

English

Subject field(s)
  • Lathe Work (Machine-Tooling)
  • Machine-Tooling (Metallurgy)
DEF

The diameter of a cylinder bounding the root of an external thread or the crest of an internal thread.

OBS

The minor diameter was formerly known as the root diameter.

French

Domaine(s)
  • Tournage sur métaux
  • Usinage (Métallurgie)
OBS

Diamètre à fond de filet de la partie mâle et diamètre intérieur, donc diamètre de l'alésage, de la partie femelle.

Spanish

Save record 8

Record 9 1987-12-17

English

Subject field(s)
  • Processing of Mineral Products
DEF

In crushing, the total work useful in breakage that has been applied to a stated weight of homogeneous broken material is invariably proportioned to the square root of the diameter of the product particles.

French

Domaine(s)
  • Préparation des produits miniers

Spanish

Save record 9

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