- possessive of I.
my
1 Americanpronoun
interjection
determiner
-
of, belonging to, or associated with the speaker or writer (me)
my own ideas
do you mind my smoking?
-
used in various forms of address
my lord
my dear boy
-
used in various exclamations
my goodness!
interjection
abbreviation
abbreviation
combining form
Grammar
See me.
Usage
What does my- mean? My- is a combining form used like a prefix meaning “muscle.” It is often used in medical terms, especially in anatomy. My- comes from the Greek mŷs, meaning “muscle” and “mouse.” Mouse? You read that right. Discover why at our entry for muscle!My- is a variant of myo-, which loses its -o- when combined with words or word elements beginning with vowels. Want to know more? Read our Words That Use myo- article.
Etymology
Origin of my
First recorded in 1125–75; Middle English mī, variant of mīn, Old English mīn; see mine 1
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.
On a personal level, I’ll tell you that having an energy stock fund in my portfolio helps me sleep easy at night.
From MarketWatch • Jul. 8, 2026
I recently returned from my 50th college reunion, where my wife and I roomed with my college suitemate, Cardinal Robert McElroy.
From The Wall Street Journal • Jul. 8, 2026
“I just really honed in on my game and realized I don’t have to play a spectacular point every time to win, even though there were some spectacular points,” Gauff said.
From Los Angeles Times • Jul. 8, 2026
"Off the pitch, building on my passion for youth development, I am equally excited to work with Michele in elevating women's football in England and on the global stage."
From BBC • Jul. 8, 2026
Hopeful, I keep my face blank, my palms on the table.
From "Will’s Race for Home" by Jewell Parker Rhodes
![]()
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.