(astronomy) A star that does not belong to a star cluster

(geometry) A special octagram, a regular compound polygon, represented by Schläfli symbol {8/2} or 2{4}, made from two congruent squares with the same center at 45° angles.

(astronomy) Any of a class of young visible stars having optical variability; they are often surrounded by a protoplanetary disc.

A nickname for the national flag of the United States of America. / The national anthem of the United States of America.

(chemistry) a star macromolecule having identical arms

(chemistry) a star macromolecule having arms composed of different types or numbers of monomers

(astronomy) Any of a class of young, very hot stars that have a very strong stellar wind and consequent broad, strong emission lines.

An actor who stands upstage, forcing the other actors to face him and turn their backs to the audience, in order to draw more attention to himself.

plural of quadruple star system

plural of binary star system