Examples of deficit in a sentence. 1  The government is facing a deficit of $3 billion. 2  We will reduce the federal budget deficit. 3  The team overcame a four-point deficit to win the game.  She has a slight hearing deficit in her left ear.
The larger objects is at one of the two foci. For example, the Sun is at one of the foci of Earth's elliptical orbit. If the eccentricity of an ellipse is large, the foci are far apart. If the eccentricity is small, the foci are close together.et's take a look at the mathematical definition of an ellipse. First, place two points on a plane; these will be the foci of the ellipse. Now, pick a distance that is larger than the distance between the two foci. We'll call that distance 2a, for reasons that will become clear in a minute.
ellipse [(i-lips)] In geometry, a curve traced out by a point that is required to move so that the sum of its distances from two fixed points (called foci) remains constant. If the foci are identical with each other, the ellipse is a circle; if the two foci are distinct from each other, the ellipse looks like a squashed or elongated circle. Note: The orbits of the planets and of many comets are ellipses.