In botany, describing a seed that has the endosperm developed on the outside of the embryo, visible externally.
From Greek ex- (outside) plus endosperm (the nutritive tissue inside a seed). The prefix endo- means 'inside,' making this term technically describe something 'outside the inside'—showing how precise botanical terminology can be.
Seeds are tiny kingdoms with their own geography—the exendospermic arrangement exposes the nutritive tissue outward, which botanists can use to identify plant families just by looking at seeds.
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