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Heliopolis
Helios
helioseismology
heliosphere
heliostat
heliotaxis
heliotherapy
heliotrope
heliotropism
heliozoan
helipad
heliport
heliskiing
helistop
helium
helium flash
helix
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heliotropism
he·li·ot·ro·pism [ hlee óttrə pìzzəm ]


noun 
Definition:
 
response to sunlight: growth toward sunlight by a plant.
See also  phototropism

he·li·o·trop·ic [ hlee ə tróppik ] adjective
he·li·o·trop·i·cal adjective
he·li·o·trop·i·cal·ly adverb
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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