Neptunian

[ nep-too-nee-uh n, -tyoo- ]
/ nɛpˈtu ni ən, -ˈtyu- /

adjective

pertaining to Neptune or the sea.
pertaining to the planet Neptune.
(often lowercase) Geology. formed by the action of water.

QUIZZES

CHALLENGE YOURSELF WITH THIS MIDDLE SCHOOL PART OF SPEECH QUIZ!

How well do you know your adjectives from your adverbs? Your preposition from your pronouns? Your interjections from your conjunctions? Let’s put your knowledge of parts of speech to the text! Note: Many of the following questions will ask you to identify the parts of speech “in order.” That means the first word in all capital letters will correspond to the first option in an answer, and so on.
Question 1 of 10
In order, what parts of speech are the words in all capital letters? Alisa was VERY tired, SO she decided to go to bed.

Origin of Neptunian

First recorded in 1650–60; Neptune + -ian

OTHER WORDS FROM Neptunian

trans-Nep·tu·ni·an, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for neptunian

British Dictionary definitions for neptunian

Neptunian
/ (nɛpˈtjuːnɪən) /

adjective

of or relating to the Roman god Neptune or the sea
of, occurring on, or relating to the planet Neptune
geology (of sedimentary rock formations such as dykes) formed under water
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012