rectilineal C2 Topic:Mathematics & Measurement US /ˌrɛktəˈlɪniəl/ UK /ˌrektɪˈlɪniəl/ See IPA manual Meanings 1 adj formed by, bounded by, or moving in straight lines A rectilineal triangle has sides that are straight line segments. Thesaurus Synonyms 1 adj · formed by, bounded by, or... rectilinearstraight-lined ↔ Opposites curvilinear Word family Related forms linealrectangle Etymology Formed from recti- (from Latin rectus, "straight") + lineal. It is an older or less common counterpart of rectilinear. Topics Mathematics & Measurement External links Cambridge Dictionary Wiktionary Google Images # rectilineal **Type:** Word **Level:** C2 **Part of speech:** adj **IPA (US):** /ˌrɛktəˈlɪniəl/ **IPA (UK):** /ˌrektɪˈlɪniəl/ ## Meanings 1. formed by, bounded by, or moving in straight lines ## Examples - A rectilineal triangle has sides that are straight line segments. ## Synonyms - rectilinear - straight-lined ## Antonyms - curvilinear ## Related Forms - lineal - rectangle ## Etymology Formed from recti- (from Latin rectus, "straight") + lineal. It is an older or less common counterpart of rectilinear. ## Topics - Mathematics & Measurement markdown