RUの定義と意味 - メリアム・ウェブスター

RU Definition & Meaning - Merriam-Webster Est. 1828 Dictionary Definition Definition Entries Near Cite this Entry Citation Medical Definition Medical More from M-W Show more Show more Citation Medical More from M-W Save Word To save this word, you'll need to log in. Log In Ru symbol ruthenium Browse Nearby Words rty Ru RU-486 See all Nearby Words Cite this Entry Style MLA Chicago APA Merriam-Webster “Ru.” Merriam-Webster.com Dictionary , Merriam-Webster, https://www.merriam-webster.com/dictionary/Ru. Accessed 30 Apr. 2026. Copy Citation Medical Definition Ru 1 of 2 symbol ruthenium RU 2 of 2 abbreviation rat unit More from Merriam-Webster on Ru Britannica.com: Encyclopedia article about Ru Love words? Need even more definitions? Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! Merriam-Webster unabridged More from Merriam-Webster Word of the Day interlocutor See Definitions and Examples » Get Word of the Day daily email! Popular in Grammar & Usage See More More Commonly Mispronounced Words 5 Verbal Slip Ups and Language Mistakes Is that lie 'bald-faced' or 'bold-faced'? The Difference Between 'i.e.' and 'e.g.' Why is '-ed' sometimes pronounced at the end of a word? See More Popular in Wordplay See More The Longest Long Words List 9 Other Words for Beautiful Was 'nervous Nellie' a Real Person? 12 Lovely and Unusual Words for the Natural World Why do we 'bury the lede?' See More Popular See More More Commonly Mispronounced Words The Longest Long Words List 9 Other Words for Beautiful See More Games & Quizzes See All Quordle Can you solve 4 words at once? Play Blossom Pick the best words! Play The Missing Letter A daily crossword with a twist Play Sound Check: A Musical Word Quiz Tune-up your vocabulary Take the quiz See All