planetary
/'plænitəri/
Học thuậtThân thiện
Definition
- Adjective:
- Relating to or resembling a planet: Pertaining to the physical characteristics, motion, or orbital path of a planet or planets.
- Of or relating to the entire Earth; global: Involving the whole world or its inhabitants; having worldwide scope or significance.
- Erratic; wandering: Having no fixed course; moving or behaving in an unpredictable or irregular manner.
Examples of Usage
- Relating to a planet:
- Planetary motion is governed by the laws of gravity.
- Scientists study the planetary atmosphere of Mars.
- Global; relating to Earth:
- Climate change is a planetary crisis.
- The invention had planetary significance.
- Erratic; wandering:
- (Archaic/Literary) He led a planetary existence, never settling in one place.
- The planetary vagabond roamed from town to town.
Advanced Usage
- "Planetary science": The scientific study of planets, moons, and planetary systems.
- She majored in planetary science to become an expert on Mars.
- "Planetary scale": On a scale as large as a planet; having a global impact.
- The pandemic was a challenge of planetary scale.
- "Planetary nebula" (Astronomy): A glowing shell of ionized gas ejected from red giant stars late in their lives. (Note: This is a compound term where "planetary" describes a type of nebula, historically named for its round, planet-like appearance through telescopes).
Variants and Related Words
- Planet (n): A celestial body moving in an orbit around a star.
- Interplanetary (adj): Situated or traveling between planets.
- Interplanetary space travel is a goal for many agencies.
- Extraplanetary (adj): Originating or existing outside a planet.
- The search for extraplanetary life continues.
Synonyms
- Global: Worldwide, international.
- Terrestrial: Earthly, worldly (specifically relating to Earth).
- Erratic: Wandering, nomadic, vagabond.
Related Phrases
- Planetary alignment: An astronomical event where planets appear in a line in the sky.
- The planetary alignment was visible just before dawn.
- Planetary gear (Engineering): A gear system consisting of one or more outer gears revolving around a central "sun" gear.
- The car's transmission uses a complex planetary gear set.
Related Idioms
- "It's not planetary": (Informal, humorous) Used to indicate something is not of great, world-altering importance.
- Relax, forgetting your keys is not a planetary emergency.
Adjective
- involving the entire earth; not limited or provincial in scope
- global war
- global monetary policy
- neither national nor continental but planetary
- a world crisis
- of worldwide significance
- having no fixed course
- an erratic comet
- his life followed a wandering course
- a planetary vagabond
- of or relating to or characteristic of the planet Earth or its inhabitants
- planetary rumblings and eructations- L.C.Eiseley
- the planetary tilt
- this terrestrial ball
- of or relating to or resembling the physical or orbital characteristics of a planet or the planets
- planetary motion
- planetary year