(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.

(idiomatic) To be grateful, feel oneself fortunate.

plural of very low mass star

Expression of astonishment.

Synonym of thank one's lucky stars

(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.