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Comprehensive
Dictionary Suite
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carotene a reddish orange hydrocarbon pigment produced in orange, yellow, and dark green plant parts, and required in human nutrition as a source of vitamin A.
night blindness abnormally weak vision in dim light or darkness, caused by a deficiency of vitamin A.
osteomalacia softening of the bones caused by vitamin and mineral deficiencies, occurring esp. in pregnant women.
retinol vitamin A.