cit·​rous | \ˈsi‧trəs\

Definition of citrous 

1 : of or relating to the genus Citrus a hardier strain of citrous trees

2 : of, relating to, devoted to the production of, or affecting plants or fruit of the genus Citrus a citrous disease an important citrous area

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First Known Use of citrous

1658, in the meaning defined at sense 2

History and Etymology for citrous

in sense 1, from New Latin Citrus; in sense 2, from citrus + -ous

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The first known use of citrous was in 1658

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by force of circumstances

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