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Stop-start
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Isotopologue
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Limestone pavement
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Chemoprevention
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Channel
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Stratosphere
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Palomares nuclear incident
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Total unbundling
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Cervical vertebra
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Diffuse pollution
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Cysteine
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Dextrocardia
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Fibril
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Longitude
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Elliptical galaxy
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Cryptanalysis
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Hyakutake's comet
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Intrusion prevention system
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Biosphere reserve
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Fovea
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TDMA
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Ependymoma
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Oxidase
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Eyebrow
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Codon
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Salix viminalis
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Motor neurone
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Anhydride
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Token-ring
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Dendritic growth
Pigment
A pigment is a coloured substance present in cells giving them their colour. Examples: melanin is the brown colour in skin; chlorophyll is the green pigment in leaves.
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