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Leo

1 American  
[lee-oh] / ˈli oʊ /

noun

Leos, plural Leonis genitive
  1. Astronomy. the Lion, a zodiacal constellation between Virgo and Cancer, containing the bright star Regulus.

  2. Astrology.

    1. the fifth sign of the zodiac: the fixed fire sign.

    2. a person born under this sign, usually between July 23rd and August 22nd.

  3. a male given name: from a Greek word meaning “lion.”


LEO 2 American  
Also L.E.O

abbreviation

  1. law enforcement officer.

  2. low earth orbit.


Leo 1 British  
/ ˈliːəʊ /

noun

  1. astronomy a zodiacal constellation in the N hemisphere, lying between Cancer and Virgo on the ecliptic, that contains the star Regulus and the radiant of the Leonid meteor shower

  2. astrology

    1. Also called: the Lion.  the fifth sign of the zodiac, symbol ♌, having a fixed fire classification and ruled by the sun. The sun is in this sign between about July 23 and Aug 22

    2. a person born during a period when the sun is in this sign

"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

adjective

  1. astrology born under or characteristic of Leo

"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
LEO 2 British  

abbreviation

  1. low earth orbit

"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

Leo 3 British  
/ ˈliːəʊ /

noun

  1. a name for a lion, used in children's tales, fables, etc

"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

Leo Scientific  
/ lēō /
  1. A constellation in the Northern Hemisphere near Cancer and Virgo. Leo (the Lion) contains the bright star Regulus and is the fifth sign of the zodiac.


Usage

What does Leo mean? Leo is the name of a constellation that is interpreted as representing a lion. It’s sometimes referred to as The Lion. A constellation is a group of stars that appear near each other in the sky—especially a group that has been given a name. Leo is considered one of the 12 zodiacal constellations—constellations that appear within a particular portion of the sky called the zodiac. In astronomy, the zodiac is the band of sky along which the paths of the sun, the moon, and the planets appear to move. Despite its basis in astronomy, the word zodiac is mainly associated with and most often used in the context of astrology, the nonscientific practice in which the positions of heavenly bodies at certain times are thought to influence or be correlated with human behavior and events. In astrology, zodiac refers to a diagram (often a circular one) representing the zodiac belt and showing the symbols associated with each of the 12 constellations or sections, which are called the signs of the zodiac. Leo is one of these signs. It is situated between Cancer and Virgo and is considered the fifth sign of the zodiac. The other signs of the zodiac are Aries, Taurus, Gemini, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, and Pisces. The position of the sun in a particular portion of the zodiac at the moment of a person’s birth is thought to correlate with their personality. This is what people are referring to when they talk about their zodiac sign (or star sign or often just sign). People whose sign is Leo are those born between July 23 and August 22. The word Leo can be used as a noun to refer to someone who is born during this time, as in I was born in early August, so I’m a Leo. The word Leonian can be used to mean the same thing. It can also be used as an adjective form of Leo. Leo is also a given name, traditionally a male one. Example: Oh, your birthday is in August? Are you a Leo?

Other Word Forms

Noun Inflected Forms

Etymology

Origin of Leo

from Latin: lion

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.

See Examples For:

There’s also competition from other rivals, such as Amazon’s Leo division.

From MarketWatch Jul. 16, 2026

Amazon Leo, the US e-commerce giant's low-Earth orbit satellite network, aims to provide internet access to customers in areas with limited or no connectivity.

From Barron's Jul. 15, 2026

For his birthday in June, the players wore a T-shirt printed with a photo of themselves alongside Leo from some point across his years with the national team.

From BBC Jul. 15, 2026

At every game, they have belted out in Spanish: For the Falklands, for Diego, for the last World Cup of Leo.

From The Wall Street Journal Jul. 14, 2026

I can feel Dad and Leo listening to one another, getting back into the groove.

From "Clairboyance" by Kristiana Kahakauwila

“Due to those actions and Zacharia Branch’s failure to comply with multiple verbal lawful commands, he was placed under arrest for misdemeanor Obstruction of LEO and received a citation for Obstructing Public Sidewalks.”

From Los Angeles Times Apr. 20, 2026

“News flow about increasingly frequent satellite launches and increasingly useful LEO satellite-based network services are rightly drawing investors’ attention,” Stein wrote in a note to clients this week, referring to low-Earth-orbit satellites.

From MarketWatch Apr. 3, 2026

All of those spacecraft need to be operational in LEO by Feb. 10, 2035.

From MarketWatch Mar. 31, 2026

He cites advances in LEO and the fact that many phones can now use satellites even when the internet is down for things like SOS messages.

From BBC Jan. 18, 2026

SEE     BRUECKNER, LEO J.   The new curriculum arithmetics.

From U.S. Copyright Renewals, 1963 January - June by Library of Congress. Copyright Office

And so, this is a love letter dedicated to our cherished Leos — we thank you for your service.

From Los Angeles Times Jul. 22, 2024

Joey Leos, the boy’s father, filed a wrongful death lawsuit against Lee, Eriz, Cloonan and his mother-in-law, Carla Lacy.

From Los Angeles Times Apr. 26, 2024

The next month, Jose Leos Cervantes, 45, from Mexico, collapsed and died shortly after walking into Vermont.

From Seattle Times Feb. 12, 2024

In March, Leos filed a federal lawsuit against Ancona and the city of El Monte, alleging that Ancona retaliated against her by trying to jeopardize her employment at Edison.

From Los Angeles Times Dec. 2, 2023

If all this host Are right authentic Leos, she must boast As potent charm as Circe's.

From Punch, or the London Charivari, Vol. 98, February 1, 1890 by Burnand, F. C. (Francis Cowley), Sir

The house was owned by Miguel Leonis, an early settler in the San Fernando Valley who dubbed himself “The King of Calabasas.”

From New York Times Oct. 3, 2022

In Calabasas, there’s a pet cemetery, founded in 1929, and L.A.’s cultural landmark No. 1, the Leonis Adobe, built in 1844 and barely rescued from getting wiped out to build a supermarket.

From Los Angeles Times Feb. 2, 2021

Like many of us, owner Ted Leonis also was snookered after last year, predicting that the Wizards would fine-tune the roster and be even better this year.

From Washington Times Apr. 4, 2016

Ted Leonis and Eric Lefkofsky - an early mentor of Mason and Groupon's largest shareholder, respectively - are serving as co-CEOs until the company finds Mason's replacement.

From Reuters Mar. 3, 2013

This change seems to have certainly occurred in the case of θ Eridani, β Leonis, ζ Piscis Australis, and some others.

From Astronomical Curiosities Facts and Fallacies by Gore, J. Ellard

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