SPAD
(plant science) A relative measurement of the amount of chlorophyll present in a leaf, based on measurements with a SPAD meter produced by Minolta.
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UK
#1·Apr 27, 2026UK
(plant science) A relative measurement of the amount of chlorophyll present in a leaf, based on measurements with a SPAD meter produced by Minolta.
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UK
#2·Apr 27, 2026UK
(rail transport, UK) An instance of a signal passed at danger.
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UK
#3·Apr 27, 2026UK
(military) ; a self-propelled anti-aircraft vehicle.
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