Anywhere that has its own style guide with a glossary of terms which lists this abbreviation as meaning “years old”. Outside of that, in general English contexts, it’s definitive informal, as most ad-hoc abbreviations are. (
 What is yrs short for?
 
 written abbreviation for
 
 years
 
 . (Definition of Yrs from the Cambridge Business English Dictionary © Cambridge University Press)
 What is the abbreviation for years old?
 
| Abbreviation Meaning | YO yo y/o years old | YPLL years of potential life lost | YST yolk sac tumor | yr year or years | 
|---|
 How do you write years in short form?
 
- 2009 becomes ’09 (not ’09)
- 2010 becomes ’10 (not ’10)
- 2525 becomes ’25 (if we’re still alive)
 What is the full form of Yo Yo?
 
| Full Form Category Term | You’re On Your Own Internet Slang YOYO | You’re Only Young Once Messaging YOYO | 
|---|
 Does yo mean years old?
 
 y.o. year old;
 
 years old
 
 .
 How do you write 2019 in short?
 
 While many of us normally abbreviate years – for example, by writing 2019 as “
 
 19
 
 ” – doing so in 2020 can be dangerous.
 What is company short?
 
 1.
 
 Co.
 
 is used as an abbreviation for company when it is part of the name of an organization.
 What does YRA mean in text?
 
 YRA.
 
 You to Race in All
 
 .
 How do you write years?
 
 
 Years should be expressed as numerals except at the beginning of a sentence
 
 . Most style guides agree that beginning a sentence with a numeral is poor style, so years placed at the beginning of a sentence should be written out as words.
 How do you write the date in year?
 
 The international standard recommends
 
 writing the date as year, then month, then the day: YYYY-MM-DD
 
 . So if both the Australian and American used this, they would both write the date as 2019-02-03. Writing the date this way avoids confusion by placing the year first.
 How do you write the year 2000 in short?
 
 The year 2000 is said as “
 
 two thousand”
 
 . We tend to say “two thousand and…” up to 2009.
 Is Yo a real word?
 
 Yo /ˈjoʊ/ is a
 
 slang interjection
 
 , commonly associated with North American English. … It was popularized by the Italian-American community in Philadelphia, Pennsylvania, in the 1940s.
 What does Yoyo mean in slang?
 
 Slang.
 
 a stupid, foolish, or incompetent person
 
 .
 What does Yolo stand for?
 
 YOLO – acronym meaning
 
 you only live once
 
 , used to express the view that one should make the most of the present moment without worrying about the future.
 What Yo means?
 
| Y/O | Definition: Year-Old | Type: Abbreviation | Guessability: 1: Easy to guess | Typical Users: Adults and Teenagers | 
|---|
 
 