Go to MSN Homeencarta®
Dictionary
Find
in
Dictionary
Thesaurus
Translations
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Click to move up the list of words
sextant
sextet
sextile
sextillion
sextodecimo
sexton
sextuple
sextuplet
sextuplicate
sexual
sexual assault
sexual dimorphism
sexual harassment
sexual intercourse
sexual orientation
sexual relations
sexual reproduction
Click to move down the list of words
Also available:

World English Dictionary
Dictionnaire Français

Seyfert galaxy
Sey·fert gal·ax·y [ sfərt gàlləksee, sfərt gàlləksee ] (plural Sey·fert gal·ax·ies)


noun 
Definition:
 
small spiral galaxy: a small spiral galaxy that varies in brightness and emits radio waves and X-rays
[Mid-20th century. After Carl K. Seyfert (1911-1960), U.S. astronomer]
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
Advertisement
© 2009 Microsoft