Meaning of QUADRANGULAR in English

QUADRANGULAR

/ kwɒˈdræŋgjələ(r); NAmE kwɑːˈd-/ adjective

1.

( geometry ) ( of a shape ) having four sides and flat rather than solid

2.

( of a sporting competition ) involving four teams or individuals who each compete against all the others

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.