'uniseeded' originates from Modern English, formed by the combining prefix 'uni-' (from Latin 'unus') meaning 'one' and the adjective 'seeded' (from Old English 'sǣd' meaning 'seed').

'uni-' comes from Latin 'unus' meaning 'one'; 'seed' comes from Old English 'sǣd' (from Proto-Germanic *sādą). The compound 'uniseeded' is a relatively recent English formation using the Latin-derived prefix 'uni-' plus the native English element 'seeded'.

Initially the components meant 'one' and 'seed' respectively; combined in modern usage they specifically denote 'having a single seed', a narrowly botanical sense that developed through compounding.