[ air-eez, -ee-eez ]
/ ˈɛər iz, -iˌiz /
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noun, genitive A·ri·e·tis [uh-rahy-i-tis]. /əˈraɪ ɪ tɪs/.
Astronomy. the Ram, a zodiacal constellation between Pisces and Taurus.
  1. the first sign of the zodiac: the cardinal fire sign.
  2. a person born under this sign, usually between March 21st and April 19th.


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Origin of Aries

1350–1400; Middle English <Latin: ram
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023


What does Aries mean?

Aries is the name of a constellation that is interpreted as resembling a ram. It can also be referred to as the Ram.

A constellation is a group of stars that appear near each other in the sky—especially a group that has been given a name. Aries 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. Aries is one of these signs. It is situated between Pisces and Taurus and is considered the first sign of the zodiac.

The other signs of the zodiac are Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, and Aquarius.

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 Aries are those born between March 21 and April 19.

The word Aries can be used as a noun to refer to someone who is born during this time, as in I was born in late March, so I’m an Aries. The word Arien can be used to mean the same thing. It can also be used as an adjective form of Aries.

Aries should not be confused with Ares, the name of the Greek god of war.

Example: My favorite constellation is Aries, and not just because I’m an Aries!

Aries dates

People with the sign Aries are traditionally considered to be those born in the range of March 21–April 19. However, interpretations vary.

Where does Aries come from?

The first records of the word Aries in English come from the 1300s. It comes from the Latin word meaning “ram.”

In astrology, the different signs of the zodiac are thought to be associated with certain personality traits. Traits associated with Aries include determination and impatience. Aries and the other signs of the zodiac are often used in the context of a person’s horoscope. The word horoscope can refer to a diagram of the heavens that maps the relative position of planets and the signs of the zodiac. It can also refer to a prediction based (or said to be based) on a person’s sign and the location of other celestial bodies at the time they were born.

The constellation Aries is associated with the Ancient Greek myth of the Golden Fleece, in which the hero Jason and his crew of Argonauts have to find the Golden Fleece so that Jason can claim his rightful throne.


Get more insight into what really defines an Aries by visiting our article on the many traits of Aries.

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What are some other forms related to Aries?

  • Arien (noun, adjective)

What are some synonyms for Aries?

  • the Ram
  • Arien

What are some words that often get used in discussing Aries?

What are some words Aries may be commonly confused with?

How is Aries used in real life?

The word Aries is used to refer to the constellation or the sign of the zodiac named after the constellation. In the context of astrology, people associate a number of different traits with the sign Aries.

Try using Aries!

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Aries is the considered first sign of the zodiac.

How to use Aries in a sentence

British Dictionary definitions for Aries

/ (ˈɛəriːz) /

noun Latin genitive Arietis (əˈraɪɪtɪs)
astronomy a small zodiacal constellation in the N hemisphere lying between Taurus and Pisces on the ecliptic and having a second-magnitude star
  1. Also called: the Ram the first sign of the zodiac, symbol ♈, having a cardinal fire classification, ruled by the planet Mars. The sun is in this sign between about March 21 and April 19
  2. a person born during the period when the sun is in this sign
astrology born under or characteristic of Aries
Also (for senses 2b, 3): Arien (ˈɛərɪən)

Word Origin for Aries

C14: from Latin: ram
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

Scientific definitions for Aries

[ ârēz ]

A constellation in the Northern Hemisphere near Taurus and Pisces. Aries (the Ram) is the first sign of the zodiac.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.