theta B2 Topic:Mathematics & Measurement US /ˈθeɪtə/ UK /ˈθiːtə/ See IPA manual Freq #11833 Meanings 1 noun the measure of an angle. It is directed along a line perpendicular to the plane of vibration at its center, and approaches infinity as the angle theta approaches the limit of Pi divided by two. Thesaurus Word family Derived forms theta-deltathetan Common collocations theta rhythm Noun + noun Etymology Borrowed from Ancient Greek θῆτα (thêta). Topics Mathematics & Measurement External links Cambridge Dictionary Wiktionary Google Images # theta **Type:** Word **Level:** B2 **Part of speech:** noun **IPA (US):** /ˈθeɪtə/ **IPA (UK):** /ˈθiːtə/ **Frequency rank:** 11833 ## Meanings 1. the measure of an angle. ## Examples - It is directed along a line perpendicular to the plane of vibration at its center, and approaches infinity as the angle theta approaches the limit of Pi divided by two. ## Derived Forms - theta-delta - thetan ## Etymology Borrowed from Ancient Greek θῆτα (thêta). ## Topics - Mathematics & Measurement markdown