bistellar

Adjective

bistellar (not comparable)

1. Involving two stars.
   • The so-called nebula in virgo—a bistellar planetary system in the retrogressive course of envelopment1914, Mabel P. Malter, The World Process
   • It must be stabilized about all three principal axes with a fully automatic, offset, bistellar guidance system .1962, Space Age Astronomy, page 252
2. (combinatorial topology) Involving the triangulation of a surface such that each vertex is incident to at most two stars.
   • Being a particular case of a stellar exchange, a bistellar operation is topology-preserving and Β⁻¹_((σ,τ)) = Β⁻¹_((τ,σ)).1997, Jan Ambjorn, Mauro Carfora, Annalisa Marzuoli, The Geometry of Dynamical Triangulations, page 177
   • A bistellar graph is defined as a graph whose edge-set can be partitioned into stars so that each vertex is incident to at most two stars.2011, Peter L. Hammer, Bruno Simeone, “Quasimonotone Boolean Functions and Bistellar Graphs”, in Combinatorics 79. Part II, page 107
3. (figuratively) Having two leaders or headliners.
   • Brown became overlord of much domestic policy in what Hennessy described as 'a bistellar administration with policy constellations revolving around the two stars'.2016, Anthony Seldon, Jonathan Meakin, The Cabinet Office, 1916–2018: The Birth of Modern Government
   • Essentially, although each of the "stars" in the bistellar administration was in a strong position of influence, and both essentially agreed on the direction of reform, one of them was anticipating that he would be in an even stronger position in the future.2018, Carolyn Hughes Tuohy, Remaking Policy, page 187