Relating to or resembling a drupe; having drupe-like qualities.
From Latin drupa plus -al, a suffix creating adjectives. Similar formation to other botanical terms that describe fruit characteristics by adding -al to the base fruit type.
The suffix -al is one of the most efficient tools in English—add it to almost any noun and you get an adjective that means 'relating to' it, which is why scientists can describe fruit qualities with just one word.
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