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Related to semidetached binary: Contact binary
semidetached binarySee binary star; equipotential surfaces.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
semidetached binary[¦sem·i·di′tacht ′bī‚ner·ē]
A binary system whose secondary member fills its Roche lobe but whose primary member does not.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.