a galaxy with no specific form and a relatively low mass.
Irregular Verbs Are Irregularly DifficultVerbs (the action words in sentences) are grouped as either regular and irregular, based on whether they follow standard rules of conjugation. Some common irregular verbs include go, have, make, say, take, and know. Regular Verbs To form the past tense of a regular verb, just add -d or -ed to the end of it. For example, learn becomes learned in the past tense. Irregular …
Double your fun with these irregular plurals!Read more in this article about some frequently asked questions and fun facts related to our definitions.
- irregular astigmatism,
- irregular bone,
- irregular dentin,
- irregular flower,
- irregular variable,
- irregular verb,
Origin of irregular galaxy
First recorded in 1960–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
A galaxy that does not have the clearly defined shape and structure of typical elliptical, lenticular, or spiral galaxies. Irregular galaxies typically contain large amounts of gas and dust, and their stars are often young. They account for only a small percentage of known galaxies. Some irregular galaxies are the result of gravitational interactions or collisions between formerly regular galaxies. Many irregular galaxies orbit larger regular ones; the Magellanic Cloud galaxies orbiting the Milky Way are examples. Compare elliptical galaxy lenticular galaxy spiral galaxy. See more at Hubble classification system.
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