Relating to or resembling citrus fruits, especially oranges, or belonging to the Aurantiaceae family of plants.
From Latin 'aurantium' (orange) plus the suffix '-aceous' (having the nature of). This scholarly adjective precisely describes plants in the citrus family.
Scholars and scientists use wonderfully specific adjectives like 'aurantiaceous' to be precise—it's far more exact to say something is 'aurantiaceous' than to say it's 'orange-like,' because it tells you exactly which plant family it belongs to.
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