Word Explorer
Astronomical unit
149,597,870,700 metres, the approximate mean distance from the Earth to the Sun (the semi-major axis of Earth's orbit), (symbol AU), used to measure distances in the solar system.
📖 Definitions of "Astronomical unit"
noun
- 1
149,597,870,700 metres, the approximate mean distance from the Earth to the Sun (the semi-major axis of Earth's orbit), (symbol AU), used to measure distances in the solar system.
💡 Words with a Similar Meaning to "Astronomical unit"
Found via reverse dictionary — words that share a conceptual meaning.
| Word | Definition |
|---|---|
| aunoun | A vowel found in Indic abugidas. |
| moon unitnoun | The average distance between the centres of the Earth and the Moon; lunar distance |
| steradiannoun | (geometry) In the International System of Units, the derived unit of solid angle; the solid angle subtended at the centre of a sphere of radius r by a portion of the surface of the sphere that has area r². Symbol: sr |
| standard rulernoun | (astronomy) Any astronomical object of known diameter whose distance can then be calculated from the angle it subtends |
| parallaxnoun | An apparent shift in the position of two stationary objects relative to each other as viewed by an observer, due to a change in observer position. |
| lunar distancenoun | (astronomy) A measurement of the distance from the Earth to the Moon. |
| elongationnoun | The act of lengthening. |
| parallax secondnoun | A unit of length, used in astronomy, defined as the distance from the Earth of an object that exhibits a parallax of 1 arcsecond. It is approximately equal to 3.08568025 × 10¹³ kilometers or 3.2616 light years. |
| uranometrynoun | (astronomy, uncountable) The measurement of the constellations. |
| apastronnoun | (astronomy) The point of greatest separation between a celestial object and the star which it orbits. |
| unit spherenoun | A sphere with a radius of 1 unit. |
| aphelionnoun | (astronomy, also figuratively) The point in the elliptical orbit of a comet, planet, or other astronomical object, where it is farthest from the Sun. |
| apoastronnoun | (astronomy) Alternative form of apastron. [(astronomy) The point of greatest separation between a celestial object and the star which it orbits.] |
| semidiameternoun | (astronomy) The apparent radius of a star etc, when viewed from Earth. |
| observable universenoun | (astronomy) The extent of a universe within the cosmological horizon of an observer. |
| anomalynoun | A deviation from a rule or from what is regarded as normal; an outlier. |
| axis mundinoun | (astronomy) The axis of Earth between the celestial poles, important in ancient geocentric coordinate systems. |
| apexnoun | The highest or the greatest part of something, especially forming a point. |
| airmassnoun | (physics, meteorology) a widespread body of air, the properties of which can be identified as: (a) having been established while that air was situated over a particular region of the Earth's surface (airmass source region) and (b) undergoing specific modifications while in transit away from the source region. An air mass is often defined as a widespread body of air that is approximately homogeneous in its horizontal extent, particularly with reference to temperature and moisture distribution; in addition, the vertical temperature and moisture variations are approximately the same over its horizontal extent. |
| apogeenoun | (figuratively) The highest point. |
Translate “Astronomical unit” into Another Language
Pick a language — the word will be pre-filled in the translator.