contact binary

noun

A binary star whose component stars are in physical contact (share an upper atmosphere).

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Meanings

nouncontact binary (plural contact binaries)

plural contact binaries

  1. astronomyA binary star whose component stars are in physical contact (share an upper atmosphere).
  2. astronomyA bilobated small Solar System body formed from two bodies that gravitated together and fused into one.
Cite this entry
APA

contact binary. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/contact%20binary

MLA

“contact binary.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/contact%20binary. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “contact binary,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/contact%20binary.

Source: contact binary on Wiktionary, CC BY-SA 4.0.