Neptunian
adjective
pertaining to Neptune or the sea.
trans-Neptunian
-
a word derived from
Neptunian.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
While astronomers and space scientists were initially skeptical about the planet nine theory, there has been mounting evidence thanks to increasingly powerful observations that the orbits of trans-Neptunian objects are indeed erratic.
From Science Daily ● Jun. 9, 2026
Many Kuiper Belt objects – also referred to as trans-Neptunian objects – have been discovered orbiting the Sun, but like Uranus they don’t do so in a continuous expected direction.
From Science Daily ● Jun. 9, 2026
Previously, speculation as to what was messing with the orbits of distant trans-Neptunian bodies fixated on the existence of a massive object — although such an object does not necessarily have to be a planet.
From Salon ● Sep. 9, 2021
Even captured asteroids in Jupiter’s orbit known as Trojans, thought to possibly be trans-Neptunian objects, aren’t this red.
From New York Times ● Jul. 28, 2021
The cosmogony of the present day sets no outer limit to the solar system, and some astronomers advocate the existence of many trans-Neptunian planets.
From Astronomy: The Science of the Heavenly Bodies by Todd, David Peck
