Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
ŏlīvĭtas, ātis, f. [oliva], the olive-gathering, olive-harvest, Varr. ap. Non. 148, 4; Col. 12, 47, 11; 12, 50, 15; 52.
In plur.: largissimis olivitatibus exuberare, Col. 1, 1, 5; cf. oliveta.