sphere

sphère, boule

Forme ou objet parfaitement rond dans toutes les directions, comme un ballon.

En anglais simple : A completely round shape or object, like a ball.

• The lamp is shaped like a sphere.
• She held a small glass sphere.
• The Earth is almost a perfect sphere.

Synonymes : ball, globe

Expressions courantes : glass sphere, solid sphere, perfect sphere

domaine, sphère

Domaine de la vie ou du travail où quelqu’un agit, exerce des responsabilités ou a de l’influence.

En anglais simple : An area of life or work in which someone acts, has responsibility, or has influence.

• Her work belongs to the political sphere.
• The matter falls outside my sphere of responsibility.
• His influence extends into several different spheres of public life.

Comment l'utiliser : sphere of something (The company expanded its sphere of influence.)

Synonymes : domain, field, area

Expressions courantes : sphere of influence, public sphere, political sphere

sphère

Surface formée de tous les points situés à la même distance d’un point central.

En anglais simple : A surface consisting of all points at the same distance from a central point.

• Every point on a sphere is equally distant from its centre.
• Draw a sphere with a radius of two units.
• The equation describes a sphere in three-dimensional space.

Expressions courantes : unit sphere, sphere surface, sphere of radius